Software: Make constants char_width and char_height private in RasterFont
Software: Make an enum into a static constant in DebugUtil.cpp
Software: Fix various brace styling errors
Software: Fix the formatting and function casing in Vec3.h
Software: Fix function casing in TextureEncoder
Software: Apply static to some functions
Software: Fix over-indentation of SetupQuad()
Software: Fix some if-statement body placements
Software: Fix function casing in SWRenderer
Merge pull request #779 from lioncash/software-cleanup

Small software backend cleanup.