Fix Griffin build
Add another WANT_ECC ifdef to cdromif.cpp
Include gte_divrecip.inc into gte.c
include dma.cpp in beetle_psx_griffin.cpp
Call FrontIO_GPULineHook directly
Optimize FrontIO_GPULineHook
Rewrite FrontIO_GPULineHook
Get rid of virtual methods ReadNV and WriteNV for memcards
CPU - small changes
GPU.cpp - more documentation
Modify set_vertex_color_constant macro
More documentation
Change 'gradated' to 'shaded'
Some more documentation
Start grouping together 4-point polygon cases
Simplify GetPixel