* NetworkManager-openvpn: Upgraded to 0.9.8.2.
* gtkmm3: Updated SlackBuild.
* chromium-plugins: Upgraded to 28.0.1500.71.
* choqok: Testing git commit b8b3d31. Removed unneeded patch.
* grub: Updated SlackBuild.
* gtkglext: Upgraded to git commit 88df39c480e739b8a59abb3780d0a01fa565595a.
* celestia: Add patch to fix building using gcc47 or newer. Removed old patches.