Add glBlendFuncSeparate

Fixes decal blending on PowerVR (some textures still broken).
Use per-pixel fog on outlines
Fix fog on sprite entities
Move q3bsp normalizing and w setting after RemoveLinearColumnsRows
Refactor glstate blend masks
Use RGBA framebuffers

Fixes blending issues on PowerVR
Fix item ghosts broken by RGBA FB commit
Let sys input hide UI cursor (for touchscreens)
Add IN_ShowUICursor to Mac
Android configs for ogg
Revert qov_open_callbacks commit
Intro is too slooooow for ARM and theorarm is weird
Fix skyboxes with different programs
Fix #118: shaders with 3+ lightstyles don't compile
Suppress VC2013 warning
correct library order
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