zip size can be 0.

(These changes remove the POSIX AIO stuff)

that are used in merge sort when creating indexes.

Fix Bug#25640:

Introduce an user visible parameter innodb_stats_sample (default 8,
min 1, max 1000) and use that parameter instead of the
BTR_KEY_VAL_ESTIMATE_N_PAGES macro. Remove this macro.

Approved by:	Heikki

and incorrect "BLOB bug fix" that was suggested by Heikki.  Explain in
a comment why no such fix is needed.

in *.h files, so that the function signatures in the *.h and *.c files fully
match each other.

ut_dulint_sort(): Add a UNIV_INTERN qualifier also to the function definition.

lock_rec_restore_from_page_infimum(): Correct the comment of the parameter rec.

lock_sec_rec_read_check_and_lock(): Add the debug assertion
ut_ad(mode == LOCK_X || mode == LOCK_S).

buf_LRU_old_adjust_len(): Replace a constant ut_ad() with a preprocessor check.

buf_LRU_free_block(): Remove the check for the unlikely case
buf_pool->LRU_old == prev_b in order to simplify the function.
The check was implemented as part of r2306.

suggested by Heikki, because it breaks row_vers_impl_x_locked_off_kernel();
see Mantis issue #10.

However, now that Heikki's fix has been removed, the code may break elsewhere
when it tries to dereference half-freed or completely freed externally
stored columns.

lock_update_delete(): Add the debug assertion ut_ad(page == page_align(rec)).

lock_rec_insert_check_and_lock(): Determine next_rec_heap_no before
acquiring the kernel mutex.  Require the table to be at least S-locked
in fast index creation.

corresponding to a compressed page, do not flag the block as recently
used, but maintain the position of the control block on the LRU list.

lock_rec_get_first(): Use a simple for loop.

lock_rec_copy(): Use mem_heap_dup().

lock_rec_find_similar_on_page(): Add const qualifier to trx.

lock_move_rec_list_end(), lock_move_rec_list_start(): Simplify the
memcmp() assertion on ROW_FORMAT=REDUNDANT records.

qualifier to parameter, and fix the formatting of a comment.

Use ut_d() in assignments to bpage->in_LRU_list instead of #ifdef UNIV_DEBUG.

buf_LRU_remove_block(): Move an assertion to a more appropriate place.

Make it easier to display the violating lock request in a debugger.

on i==j==BUF_BUDDY_SIZES.

innobase_check_index_keys(): Remove unused parameters.  Use
sql_print_error() for error message output.

ha_innobase::add_index(): When row_merge_rename_tables() fails, do not
allow row_merge_drop_table() to alter the error code returned to MySQL.

the dynamic InnoDB plugin, ha_innodb.so.  This libtool option cannot
be used on every target platform.  For instance, the AMD64 (x86_64) ABI
mandates position-independent code (PIC) in dynamic shared objects.

Makefile.am: Use $(INNODB_CFLAGS) and $(INNODB_DYNAMIC_CFLAGS) in
target-specific CFLAGS and CXXFLAGS variable definitions.

plug.in: Instead of appending to the MySQL-wide CFLAGS, introduce
the variables INNODB_CFLAGS and INNODB_DYNAMIC_CFLAGS.  Depending on
$target_cpu, append -prefer-non-pic to INNODB_DYNAMIC_CFLAGS.

position-independent code in the compilation of ha_innodb.so.

ha_innodb_la_CXXFLAGS, ha_innodb_la_CFLAGS: Add -prefer-non-pic.
This flag is interpreted by the ../../libtool script that acts
as a front-end to the compiler and linker.

unapproved change r2290.

Do not include univ.i in mysql_addons.h, it was included for the sole
purpose of innodb_redefine.h to work and now innodb_redefine.h has been
removed. See r2251 and r2288.

At present, the script only accepts one command line parameter.
Append newline to some die messages, so that the Perl interpreter
will not print the file name and line number of the failing statement.

file has been redundant since r2278.

include/innodb_redefine.h: Remove.

include/sync0sync.h: Remove the definition of mutex_free that was added
because of innodb_redefine.h.

include/univ.i: Remove references to innodb_redefine.h.  Explain why
the C++ classes need to be renamed.

scripts/build-plugin.sh: Build InnoDB only once.  The file
innodb_redefine.h is no longer needed.

space identifier in the corruption message.

srv_log_file_size is misspelled as srv_log_filen_size in r2276

reviewed by: non-functional change.

static symbol definitions.

yy_scan_buffer, yy_scan_string, yy_scan_bytes: Leave these unused extern
function declarations alone.

yypush_buffer_state, yypop_buffer_state, yyswitch_to_buffer, yyget*, yyset*,
yylex_destroy: Add __attribute__((unused)).

This closes Mantis issue #8.

about undo_rec possibly being uninitialized.  When trx_undo_get_undo_rec()
leaves undo_rec uninitialized, both functions will return DB_MISSING_HISTORY
without dereferencing undo_rec.

This closes Mantis issue #7.