CRM-14811 - Add CRM_Core_InnoDBIndexer
CRM-14811 - Add setting "enable_innodb_fts". Changes trigger InnoDBIndexer->fixSchemaDifferences.
CRM-14811 - FullText - Use InnoDB FTS when available.
CRM-14811 - "Adminster => System => Misc" - Add option to enable InnoDB FTS
CRM-14811 - Check "enable_innodb_fts" during upgrades
CRM-14811 - AbstractPartialQuery - Doc tweak
Merge pull request #3451 from totten/master-fts-idx

CRM-14811 - Full Text Search - Optional optimizations for MySQL 5.6+