SWELL: retina blitting optimized, reusing temporary buffers, and using SSE when possible, from 2f6b952d, 2f52cd7b, c2db0ad2, dbf50a61, 528cc02f, 56b067ff
SWELL: some sample disabled AVX code for Retina displays -- from 894fa23a
SWELL: todo note re deltaX/deltaY on 10.7+ -- from 5e7ab9e5
SWELL: GL blit compile fix for recent OSX SDKs -- from b1addbd1
LICE: test osx project uses current SDK/arch for better xcode compat -- from feff88ef, adc23b3f
svgtiny: fix for clang/llvm -- from 03e83982