A lot of small fixes and new test cases.

client/mysqlbinlog.cc:
  Cast removed
client/mysqltest.cc:
  Added missing DBUG_RETURN
include/my_pthread.h:
  set_timespec_time_nsec() now only takes one argument
mysql-test/t/date_formats.test:
  Remove --disable_ps_protocl as now also ps supports microseconds
mysys/my_uuid.c:
  Changed to use my_interval_timer() instead of my_getsystime()
mysys/waiting_threads.c:
  Changed to use my_hrtime()
sql/field.h:
  Added bool special_const_compare() for fields that may convert values before compare (like year)
sql/field_conv.cc:
  Added test to get optimal copying of identical temporal values.
sql/item.cc:
  Return that item_int is equal if it's positive, even if unsigned flag is different.
  Fixed Item_cache_str::save_in_field() to have identical null check as other similar functions
  Added proper NULL check to Item_cache_int::save_in_field()
sql/item_cmpfunc.cc:
  Don't call convert_constant_item() if there is nothing that is worth converting.
  Simplified test when years should be converted
sql/item_sum.cc:
  Mark cache values in Item_sum_hybrid as not constants to ensure they are not replaced by other cache values in compare_datetime()
sql/item_timefunc.cc:
  Changed sec_to_time() to take a my_decimal argument to ensure we don't loose any sub seconds.
  Added Item_temporal_func::get_time() (This simplifies some things)
sql/mysql_priv.h:
  Added Lazy_string_decimal()
sql/mysqld.cc:
  Added my_decimal constants max_seconds_for_time_type, time_second_part_factor
sql/table.cc:
  Changed expr_arena to be of type CONVENTIONAL_EXECUTION to ensure that we don't loose any items that are created by fix_fields()
sql/tztime.cc:
  TIME_to_gmt_sec() now sets *in_dst_time_gap in case of errors
  This is needed to be able to detect if timestamp is 0
storage/maria/lockman.c:
  Changed from my_getsystime() to set_timespec_time_nsec()
storage/maria/ma_loghandler.c:
  Changed from my_getsystime() to my_hrtime()
storage/maria/ma_recovery.c:
  Changed from my_getsystime() to mmicrosecond_interval_timer()
storage/maria/unittest/trnman-t.c:
  Changed from my_getsystime() to mmicrosecond_interval_timer()
storage/xtradb/handler/ha_innodb.cc:
  Added support for new time,datetime and timestamp
unittest/mysys/thr_template.c:
  my_getsystime() -> my_interval_timer()
unittest/mysys/waiting_threads-t.c:
  my_getsystime() -> my_interval_timer()

mysql-test/suite/funcs_1/r/innodb_func_view.result:
  Updated results
mysql-test/suite/funcs_1/r/memory_func_view.result:
  Updated results
mysql-test/suite/funcs_1/r/myisam_func_view.result:
  Updated results
mysql-test/suite/pbxt/r/func_str.result:
  Updated error numbers
mysql-test/suite/pbxt/r/type_newdecimal.result:
  Updated error numbers
mysql-test/valgrind.supp:
  Added suppression for warning on Work (OpenSuse 11.3 64 bit)

unix_timestamp() and time_to_sec() are hybrid items,
  returning integer or double depending on the argument.

extra/comp_err.c:
  Allow one to have multiple start-error-numbers in the same error.txt file.
  Generate 'empty' error strings for the missing error numbers in the errmsg.sys file
mysql-test/r/bigint.result:
  Update results to use new error numbers
mysql-test/r/dyncol.result:
  Update results to use new error numbers
mysql-test/r/func_math.result:
  Update results to use new error numbers
mysql-test/r/func_str.result:
  Update results to use new error numbers
mysql-test/r/plugin.result:
  Update results to use new error numbers
mysql-test/r/table_options.result:
  Update results to use new error numbers
mysql-test/r/type_newdecimal.result:
  Update results to use new error numbers
mysql-test/r/warnings.result:
  Update results to use new error numbers
mysql-test/suite/vcol/r/vcol_ins_upd_innodb.result:
  Update results to use new error numbers
mysql-test/suite/vcol/r/vcol_ins_upd_myisam.result:
  Update results to use new error numbers
mysql-test/suite/vcol/r/vcol_misc.result:
  Update results to use new error numbers
sql/derror.cc:
  Ensure we don't read a errmsg.sys with a missing required error message;  This change was needed as errmsg.sys may now contain empty error messages between the MySQL and MariaDB error messages.
  If error message file didn't exist and we have not read one in the past, don't continue.
  Give better error message if the errmsg.sys header has changed.
sql/share/errmsg.txt:
  Create new section, starting from 1900, for MariaDB error messages

Fields belonging to views in general cannot be substituted for 
equal items, in particular for constants, because all references
to a view field refer to the same Item_field object while they 
could be used in different OR parts of the where condition and
belong to different equivalence classes (to different Item_equals).
That's why substitution for equal items in any context is allowed
only in place of Item_direct_view_ref objects, but not in place of
Item_fields these objects refer to.
Due to some erroneous code in the patch for bug 717577 substitution
for view fields were allowed in some context.This could lead
to wrong results returned by queries using views.

The fix prohibits substitution of view fields for equal items 
in any context.

The patch also changes slightly the compile method for the Item_func
class. Now if the analyze method returns NULL in his parameter the
compile method is not called for the arguments of the function
at all. A similar change was made for the Item_ref class.     

- Fix CRLF end of lines, use LF instead

- in advance_sj_state(), remember join->cur_dups_producing_tables in 
  pos->prefix_dups_producing_tables *before* we modify it, so that 
  restore_prev_sj_state() restores cur_dups_producing_tables in all cases.
- Updated test results in subselect_sj2[_jcl6].result (the original EXPLAIN
  was invalid there)

  TIMESTAMP -> TIMESTAMP(6)
  TIME -> TIME(6)
in general_log and slow_log tables.

include/my_sys.h:
  use constants

sql/event_parse_data.cc:
  don't use "not_used" variable
sql/item_timefunc.cc:
  Item_temporal_func::fix_length_and_dec()
  and other changes
sql/item_timefunc.h:
  introducing Item_timefunc::fix_length_and_dec()
sql/share/errmsg.txt:
  don't say "column X" in the error message that used not only for columns

* my_getsystime() is only an interval timer. Its value can beused for calculating
  time intervals.
* renamed my_getsystime() to my_interval_timer(), to make the semantics
  clearer and let the compiler catch wrong usages of my_getsystime()
  (also future ones, that may come in merges).
* increased its granularity from 100ns to 1ns, old value was for UUID,
  but as UUID can no longer use it directly there is no need to downgrade
  the OS provided value
* fixed the UUID code to anchor the my_interval_timer() on the epoch, as
  required by the UUID standard. That is, this was only needed by UUID,
  and now I've moved it to UUID code from my_getsystime().
* fixed other wrong usages of my_getsystime() - e.g. in calculating
  times for pthread_cond_timedwait. It was buggy and could've caused
  long waits if OS clock would be changed.

include/my_time.h:
  remove duplicate defines.
  cast to ulonglong to avoid overflow
sql/field.cc:
  perform sign extension when reading packed TIME values
sql/item_cmpfunc.cc:
  when converting a string to a date for the purpose of comparing it with another date,
  we should ignore strict sql mode.
sql/item_timefunc.cc:
  better error message
sql/item_timefunc.h:
  limit decimals appropriately
sql/share/errmsg.txt:
  don't refer to an object as a "column" in error messages that are used not only for columns.

.bzr-mysql/default.conf:
  5.2 -> 5.3
sql/handler.h:
  Updated comments.

Fix based on suggestion by Zardosht Kasheff and Richard Prohaska) for making all clustered indexes equal in test_if_skip_sort_order()


sql/sql_select.cc:
  - Threat all clustered indexes equal in test_if_skip_sort_order().
    This is a temporary fix as the current code doesn't do proper cost analyizes for which index to use.
    I will address this later as the change required is not trivial.
  - Fixed a bug where select_limit was changed in the loop, which made different indexes see diferent values of select_limit

- Added a lot of code comments
- Updated get_best_ror_intersec() to prefer index scan on not clustered keys before clustered keys.
- Use HA_CLUSTERED_INDEX to define if one should use HA_MRR_INDEX_ONLY
- For test of using index or filesort to resolve ORDER BY, use HA_CLUSTERED_INDEX flag instead of primary_key_is_clustered()
- Use HA_TABLE_SCAN_ON_INDEX instead of primary_key_is_clustered() to decide if ALTER TABLE ... ORDER BY will have any effect.

sql/ha_partition.h:
  Added comment with warning for code unsafe to use with multiple storage engines at the same time
sql/handler.h:
  Added HA_CLUSTERED_INDEX.
  Documented primary_key_is_clustered()
sql/opt_range.cc:
  Added code comments
  Updated get_best_ror_intersec() to ignore clustered keys.
  Optimized away cpk_scan_used and one instance of current_thd (Simpler code)
  Use HA_CLUSTERED_INDEX to define if one should use HA_MRR_INDEX_ONLY
sql/sql_select.cc:
  Changed comment to #ifdef
  For test of using index or filesort to resolve ORDER BY, use HA_CLUSTERED_INDEX flag instead of primary_key_is_clustered()
  (Change is smaller than what it looks beause of indentation change)
sql/sql_table.cc:
  Use HA_TABLE_SCAN_ON_INDEX instead of primary_key_is_clustered() to decide if ALTER TABLE ... ORDER BY will have any effect.
storage/innobase/handler/ha_innodb.h:
  Added support for HA_CLUSTERED_INDEX
storage/innodb_plugin/handler/ha_innodb.cc:
  Added support for HA_CLUSTERED_INDEX
storage/xtradb/handler/ha_innodb.cc:
  Added support for HA_CLUSTERED_INDEX

client/mysqltest.cc:
  Column names.
mysql-test/r/grant_cache_no_prot.result:
  fix of text.
mysql-test/r/grant_cache_ps_prot.result:
  Fix of test.
mysql-test/r/query_cache.result:
  Switching on and off query cache.
mysql-test/t/query_cache.test:
  Switching on and off query cache.
mysys/charset.c:
  Fix of parser.
sql/handler.cc:
  thd added to parameters.
sql/log_event.cc:
  thd added to parameters.
sql/log_event_old.cc:
  thd added to parameters.
sql/mysql_priv.h:
  Fixed functions definitions.
sql/mysqld.cc:
  Comments stripping.
sql/set_var.cc:
  Switching on and off query cache.
sql/set_var.h:
  Switching on and off query cache.
sql/share/errmsg.txt:
  New errors.
sql/sql_cache.cc:
  Switching query cache on and off, removing comments.
sql/sql_cache.h:
  thd added to parameters.
sql/sql_class.h:
  Comments stripping.
sql/sql_db.cc:
  thd added to parameters.
sql/sql_lex.cc:
  lex fixed.
sql/sql_parse.cc:
  thd added to parameters.

The printing of include stack in the error case in mysqltest omitted the
bottom of the stack (the line number in original test case file), and instead
printed the top of the stack twice. Fix to print each element on the stack
once and only once.

Original code by Zardosht Kasheff

sql/handler.cc:
  Added HA_ERR_DISK_FULL and ENOSPC (for handler that uses normal errno).
  This sets 'fatal_error' to ensure that the error is logged to err file (which hopefully is on another disk...)

Fixed alias bug when compiling with gcc 4.2.4 that caused subselect.test to fail

sql/item.cc:
  Removed alias warnings by changing type from char * to const char*
sql/item.h:
  Removed alias warnings by changing type from char * to const char*
sql/item_subselect.cc:
  Fixed alias bug when compiling with gcc 4.2.4 that caused subselect.test to fail
sql/sql_string.h:
  Removed alias warnings by changing type from char * to const char*
storage/heap/hp_test2.c:
  Removed SAFEMALLOC to get rid of compiler error
  Fixed test case as we can't anymore use heap_rlast() on a HASH key entry.

(from Wlad)

storage/maria/ma_loghandler.c:
  Awoiding signed and unsigned comporison.
storage/maria/ma_loghandler.h:
  debug function.
storage/maria/unittest/ma_loghandler_examples.c:
  debug function.