Add innodb_locks.lock_data column and some relevant tests.
For record locks this column represents the ordering fields of the
locked row in a human readable, SQL-valid, format.
Approved by: Marko
functions.
ut_malloc_low(): Flag the block with UNIV_MEM_ALLOC(). Do not flag the
block with UNIV_MEM_FREE() in ut_free(), because it would cause bogus
Valgrind warnings in the underlying memory allocator.
mem_pool_create(): Flag the data area with UNIV_MEM_FREE().
mem_pool_fill_free_list(): Flag the area header with UNIV_MEM_ALLOC().
mem_area_alloc(): Flag the data area with UNIV_MEM_ALLOC().
mem_area_free(): Flag the data area with UNIV_MEM_FREE().
mem_heap_alloc(): Flag the buffer with UNIV_MEM_ALLOC().
mem_heap_block_free(): Flag the block with UNIV_MEM_FREE().
mem_heap_free_top(): Flag the block with UNIV_MEM_FREE().
