First real attempt at lit water.
Parsing rtlights is now aware of spotlights.
Default cl_yieldcpu to 1, to save cpu for anyone who sets cl_maxfps lower. Added to menus.
presets now include view angle clamping - maps made for quakespasm REQUIRE full pitch angles despite it otherwise being considered a cheat or glitchy (on servers that try to block the cheat).
fix r_fullbrightSkins>=1 issue.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5274 fc73d0e0-1445-4013-8a0c-d673dee63da5
In this version: replacement GL backend. Replacement D3D backend sharing code with GL. Lots of code reorganisation.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/branches/wip@3401 fc73d0e0-1445-4013-8a0c-d673dee63da5
