FullText - Search by email, blank

Steps:

1. Install Civi on MySQL 5.6+ (which supports InnoDB FTS)
2. Enable Civi's support for InnoDB FTS
3. Navigate to "Search => Full-text search"
4a. Search by blank value. Observe: Error screen. (Expected: All records.)
4b. Search by email address. Observe: Error screen. (Expected: Records which reference the email address.)

See also: NYSS #9692