row_merge_mark_prebuilt_obsolete(): Rename to row_prebuilt_table_obsolete()
and move from row0merge.c to row0mysql.c. Remove the parameter trx.
row_merge_print_table(): Remove.
row_remove_indexes_for_mysql(): Rename to row_merge_drop_indexes(),
move from row0mysql.c to row0merge.c and make the return type void.
row_merge_remove_index(): Rename to row_merge_drop_index() and make
the return type void.
Replace byte offsets of type dulint with block offsets of type ulint.
Avoid references to MERGE_BLOCK_SIZE.
Improve the language of some comments.
row_merge_insert_index_tuples(), row_merge_sort_linked_list_in_disk():
Make the offset a ulint.
row_merge_read(), row_merge_write(): Helper functions. Return the
status of os_file_read() and os_file_write(). TO DO: check the status
in the callers.
Move more definitions from row0mysql.h to row0mysql.c. Remove the
unused definition of merge_thread.
merge_index_def_t: Replace merge_index_field_t** with merge_index_field_t*.
Use mem_heap_strdup() when copying strings.
ha_innobase::add_index(): Avoid excessive use of current_thd.
Define the merge_rec_ structures in row0merge.c instead of
row0merge.h. They are not used in the interface defined in row0merge.h.
row_merge_create_file_structure(): Rename to row_merge_file_create().
Input a pointer to a pre-allocated block of memory.
row_merge_read_clustered_index(): Replace merge_file_t** with merge_file_t*.
row_merge_sort_and_insert_thread(): Remove the declaration.
This function was never defined or called.
row_merge_is_index_usable(): Correct the formatting.
row_build_index_for_mysql(): Allocate an array of merge_file_t instead
of an array of pointers to merge_file_t.
