Bugfixes

-Disable printing game dll filename
-Fix compiler warning
-Update r_fencesync
-Fix for stupidity in r_fog
Add support for building against Regal (experimental)

At this time it's unknown if this offers significant benefit or not,
however due to heavy use of OpenGL 1.x code it is highly likely that a
compatibility layer like Regal may become necessary at some point down
the road.
Clean up renderer init a bit more
-Removed dedicated support for legacy cards
-Removed qgl_win.c since it was empty
Move to using vrconfig.cfg instead of kmq2config.cfg
Changes to game saves/loads

-fix broken menu shot for autosave
-fix broken menu shot for VR mode
-remove broken screenshot for back menu item
-rename save directory from kmq2save to vrsave
Add menu item for r_fencesync
Add mission pack support source + update for VS2012
Move to Xinput 9.1.0
Add new abstraction for head position tracking as well

-Moved basic head/neck model as a fallback for devices that don't
support position tracking.