this patch removes cfb support from the six drivers where its use is an option -
i740, nsc, s3, s3virge, siliconmotion, and via. cuts 600 lines of dead code.
for all but s3virge cfb is a compile-time option. no one wants to use cfb
anyway, it's slow and lacks Render support.
Created attachment 736 [details] [review]
as a side effect this kills the last user of xf24_32bpp, which is another ~800 LoC.
Created attachment 739 [details] [review]
extends the previous patch to also remove xf24_32bpp, since it's now useless.
Created attachment 783 [details] [review]
more cleanup, delete some header references and dead code, and fix comments to
refer to fb instead of cfb.
applied, along with some Imakefile cleanup.