wdl_types: added WDL_likely/WDL_unlikely -- from be925332
LICE: lice_combine const freshening -- from c41ad733
Plush2: slight optimization by using texwidth/tex_rowspan in bytes rather than pixels -- from a6950f71
lice test app fun -- from a17a4f16
LICE: removed pngtest from vc6 project -- from 4aac88f6
SWELL: faster StretchBlt, faster BitBlt() on retina macs

+ OSX: faster drawing for Retina Macs -- from 5a42fc91
SWELL: StretchBlt pixel-doubling code, disabled but might be useful.  also removed old unused 10.4 blitting mode, comments re blit unification -- from 53b0e1e4
cstring: added WDL_strcmp_logical() -- from c5a6b09c
LICE test app: osx xcode project update, tweaks for benchmarking -- from 6f489116
SWELL: when using CGImageCreate(), use device RGB (same behavior on 10.4, matches behavior/performance of NSImageRep code on 10.5+) -- from cd991213
SWELL: single code path for BitBlt/StretchBlt, no longer use old NSBitmapImageRep path -- from b09fe206
wdlcstring: include ctype.h -- from 7f9e5c4b
SWELL: better handling of views with GL contexts set (better state tracking) -- from 84f7380f
SWELL: using BitBlt/StretchBlt on GL contexts now properly works, and fast. Before it would just fail. -- from 75377b2f
SWELL: must define SWELL_SUPPORT_OPENGL_BLIT to enable GL blitting -- from 22b06e38
LICE test app: benchmarking stuff, OSX project update, etc -- from d5243ec9