add isConvex() hit to SkPath, to be used to speed up fills and opengl
set linewidth in gldevice for hair rects
remove some cruft from samples
add more gl-unimpl messages



git-svn-id: http://skia.googlecode.com/svn/trunk@199 2bbb7eff-a529-9590-31e7-b0007b416f81
9 files changed