include/my_global.h:
  MWL#17: Table elimination: fixes for windows
  - Add ALIGN_MAX_UNIT (assume malloc returns data aligned to this much)
mysql-test/r/table_elim.result:
  MWL#17: Table elimination: fixes for windows
  - Use only lower-case as EXPLAIN [EXTENDED] changes case of table names
    on windows
mysql-test/t/table_elim.test:
  MWL#17: Table elimination: fixes for windows
  - Use only lower-case as EXPLAIN [EXTENDED] changes case of table names
    on windows
sql/opt_table_elimination.cc:
  MWL#17: Table elimination: fixes for windows
  - Add extra alignment-padding-space for stack-allocated buffers.