Fix Bug #13444828 - INNODB FTS SUPPORT: FAILING ASSERTION:
UT_STRCMP(INDEX1->NAME, INDEX2->NAME
rb://842 approved by marko 

Fix Bug #13410591 and Bug #13440415
Bug #13410591 - UNEXPECTED 'FINISH BUILD INDEX' MESSAGES IN SERVER ERROR LOG
Bug #13440415 - INNODB FTS SUPPORT:(DICT_INDEX_GET_N_UNIQUE(PLAN->INDEX) <=
PLAN->N_EXACT_MATCH)
rb://833 approved by Sunny Bains