Added if( !function_exists ) around all _utl_ functions.

git-svn-id: https://plugins.svn.wordpress.org/game-locations/trunk@905247 b8457f37-d9ea-0310-8a92-e5e31aec5664
Replaced _gl_ functions with _utl_ functions. Not sure how this ever got in the trunk.

git-svn-id: https://plugins.svn.wordpress.org/game-locations/trunk@905249 b8457f37-d9ea-0310-8a92-e5e31aec5664