DXGLCFG2: Implement checkboxes for extra modes combobox. Fix item highlighting in application list.
DXGLCFG2: Implement checkboxes for extra modes combobox.
Fix item highlighting in application list.

git-svn-id: 763a368b42d23a8c112339c16f7e9c1b0ab7c9a5@753 8a90861a-4eca-46d5-b744-240ff16d0c4d

WilliamFeely/dxgl,WilliamFeely/dxgl,WilliamFeely/dxgl,WilliamFeely/dxgl