[ticket/12257] Use MyISAM in PHP 5.3 environment such that FULLTEXT tests run.

PHPBB3-12257
Merge pull request #2179 from bantu/ticket/12257

[ticket/12257] Use MyISAM in PHP 5.3 environment such that FULLTEXT test...

* bantu/ticket/12257:
  [ticket/12257] Use MyISAM in PHP 5.3 environment such that FULLTEXT tests run.

Conflicts:
	.travis.yml
Merge remote-tracking branch 'bantu/ticket/12257' into develop-olympus

* bantu/ticket/12257:
  [ticket/12257] Use MyISAM in PHP 5.3 environment such that FULLTEXT tests run.
Merge remote-tracking branch 'bantu/ticket/12257-ascraeus' into develop-ascraeus

* bantu/ticket/12257-ascraeus:
  [ticket/12257] Use MyISAM in PHP 5.3 environment such that FULLTEXT tests run.
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus: