Check GPU capabilities more consistently
Mostly by catching ogre exceptions when applying settings. See for example: http://forum.openmw.org/viewtopic.php?f=20&t=962&p=10319#p10318
(RM-406 from redmine: created on 2012-09-22 by scrawl ., , closed on 2015-06-06 by nobody)
Edited by redmine