fwr: if using selectColumn, fetchIds method should use it and not id column
Merge branch 'master' of https://github.com/kaltura/server-plugin-search-sphinx

Conflicts:
	lib/SphinxCriteria.php
Merge branch 'master' of https://github.com/kaltura/server-plugin-search-sphinx

Conflicts:
	lib/SphinxCriteria.php