Recommended update for VirtualGL

This recommended update provides version 2.5 for VirtualGL:

- Fix boo#993645 as-needed eating symbols needed by this lib
* virtualgl-nodl.patch
- Use system xcb headers
- Rename glxinfo2 to vglxinfo, sounds bit better and more descriptive

- Version update to 2.5 release
* See upstream changelog for details
* Mostly removal of compat for pre-VirtualGL namespace

Fixed bugs
bnc#993645
X11:Bumblebee/VirtualGL: package does not work with Wine
Selected Binaries
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