This is a manual merge of Hecatomb Q2 ref b8952d5. Manual since git
couldn't do an automerge for some reasons... Notable changes are:
- QGL function pointers are removed, libGL is linked directly
- The OpenGL log framework is removed. It was disfunctional
- The gl_driver cvar is finaly gone
This change is currently untested on Windows and OS. There should
be no problems but a better Makefile integration of libGL is needed.
Normally setting gl_mode cvar would result in VID_LoadRefresh because
of vid_ref being "modified". After removing vid_ref out of the picture
it will "modify" vid_fullscreen to replicate the same behaviour.
Variable "name" (who used to hold refresh dll name) is now left unused
All references to vid_ref cvar has been taken out ...
If "horplus" is set, the "fov" cvar is interpreted as the horizontal FOV
in a 4:3 screen, and is adapted automatically to the current screen
aspect ratio accordingly. If not set, use the old Vert- approach.
In addition, "horplus" can also be set from the video menu by selecting
the "Auto" option for aspect ratio, which also resets the FOV value to the
standard 90 degrees.
Finally, add a 5:4 aspect ratio (1280x1024) and correct the 16:9 angle
slightly.
