accidentally broken in r1939.  It failed when next_rec == NULL.

been added in r1943.  This is needed for building a noninlined version.

references uninitialized, because it causes bogus warnings since r1947.

dtuple_validate(): Detect uninitialized data.

page_cur_insert_rec_low(), page_cur_insert_rec_zip(): Assert that the
record being inserted is valid before and after insertion.

reports duplicate key values.  The reported value may depend on the
size of the main-memory merge sort buffer (row_merge_block_t).

INNODB_ZIP and INNODB_ZIP_RESET from ha_innodb.cc to i_s.cc.

plugin_author, END_OF_ST_FIELD_INFO, i_s_info: New common constants.

trx_i_s_common_deinit(): Renamed to i_s_common_deinit().

in ST_FIELD_INFO.

For some reason, GCC 4.2.1 ignores casts (for removing constness)
in calls to inline functions.

page_align(), ut_align_down(): Make the parameter const void*, but still
return a non-const pointer.  This is ugly, but these functions cannot be
replaced with a const-preserving macro in a portable way, given that
the pointer argument is not always pointing to bytes.

buf_block_get_page_zip(): Implement as a const-preserving macro.

buf_frame_get_page_zip(), buf_block_align(): Add const qualifiers.

lock_rec_get_prev(): Silence GCC 4.2.1 warnings.

mlog_write_initial_log_record(), mlog_write_initial_log_record_fast(),
mtr_memo_contains(): Add const qualifier to the pointer.

page_header_get_ptr(): Rewrite as page_header_get_offs(), and
implement as a macro that calls this function.

buf_block_hash_get(): New function, similar to buf_page_hash_get().

buf_page_get_block(): Remove the const qualifiers.  This is a low-level
function, and the operations on block->mutex are non-const.

buf_page_try_get_func(): Implement with lower-level predicates, somewhat
similar to buf_page_get_known_nowait().

lock_rec_print(): Remove the unused variable zip_size and the
call to fil_space_get_zip_size().  Adapt to buf_page_try_get() returning
a const pointer.

buf_block_fix_inc(), and use it.

Remove bogus comment from ha_storage_empty().

Add const qualifier to the value returned by ha_storage_put().
It must not be changed as this will invalidate the hash.

from buf_page_t* to buf_block_t*.

buf_page_can_relocate(): Replace the incorrect __attribute__((const))
with __attribute__((pure)).

ha_innobase::update_thd(void): New function, to call the inline function
ha_innobase::update_thd(THD*).

check_trx_exists(): Make static.  handler0alter.cc does not need to call
this function.

offsets_[] arrays, as suggested by Vasil.

rec_offs_set_n_alloc(): Declare as a public function.  Assert that
n_alloc > REC_OFFS_HEADER_SIZE.

rec_offs_get_n_alloc(): Assert that n_alloc > REC_OFFS_HEADER_SIZE.

the sync_thread_levels_g() check, so that it will be easier to add
new sync levels.

Fix compilation warning:

can_cache_be_updated(): Remove const qualifier because this function needs
to call rw_lock_own().

with "col" in two debug assertions.  This mistake was made in r1910.

Fix a warning produced when UNIV_DEBUG is defined.

Move part of the code from lock_rec_print() in a separate function
buf_page_try_get() because the same functionality is needed in
INFORMATION SCHEMA code.

Approved by:	Heikki

Add auxiliary function lock_rec_get_index() to retrieve the index on
which the lock is.

Approved by:	Heikki

Fix a bug where the condition (prtype & DATA_ROW_ID) is unexpectedly
always false becasue DATA_ROW_ID is 0.

Use a switch instead of if-else in order to avoid repeating
(prtype & DATA_SYS_PRTYPE_MASK).

Approved by:	Heikki

innobase_col_to_mysql(): New function, adapted from
row_sel_field_store_in_mysql_format().

innobase_rec_to_mysql(): Correct the function comment, which was still
saying "clustered index record", although we can convert any record.
Make use of innobase_col_to_mysql().  Always call field->reset(),
so that innobase_col_to_mysql() will not have to pad anything.

"data" from byte* to const void*.

if-else with switch.

Since r1905, innobase_rec_to_mysql() does not require a clustered index record.

row_merge_dup_t: Remove old_table.

row_merge_dup_report(): Do not fetch the clustered index record.  Simply
convert the tuple by innobase_rec_to_mysql().

row_merge_blocks(), row_merge(), row_merge_sort(): Add a TABLE* parameter
for reporting duplicate key values during file sort.

row_merge_read_clustered_index(): Replace UNIV_PAGE_SIZE with the more
appropriate sizeof(mrec_buf_t).

clustered or secondary.  Remove the rec_offs_validate() assertion, because
the function may be passed a mrec_t* that would fail the check.

This should have been done in r1903, where the minimum size of
row_merge_block_t was noted to be UNIV_PAGE_SIZE.