Deprecate more legacy features
-deprecate NV_texture_shader
-deprecate r_ztrick
-deprecate r_3dlabs_broken
-deprecate r_drawbuffer
-deprecate r_nosubimage
-deprecate r_vertex_arrays
-deprecate r_ext_compiled_vertex_array
-deprecate r_ext_multitexture
-deprecate legacy light map formats
-deprecate r_newlightmapformat
-deprecate r_round_down
Cleanup some stuff related to FSAA
Change semantics for binding and clearing buffers
-The VR render path now automatically manages buffer clearing
-OVR path now resizes views at bind time
-Render target size and position now has formal functions and abstraction instead of simple shared variables
Add weighted bilinear filtering option
Update default settings
-Default to a larger HUD
-Default to enabling hardware caustics
Fix issues with bloom

-Defer bloom texture init to avoid issues with it loading before VR mode
is fully initialized
-Prevent issue where malloc gets spammed after allocation failure if
r_bloom is enabled.
Update to VR view rect interface