speedup some of the unittests that were too slow
minor cleanup in SkScan_Path, in prep for larger changes
git-svn-id: http://skia.googlecode.com/svn/trunk@426 2bbb7eff-a529-9590-31e7-b0007b416f81
when we're above or below the clip.
Still to do:
- chop in X to avoid 16.16. overflow in the edgelist
- apply the same logic for cubics (tho much harder math)
git-svn-id: http://skia.googlecode.com/svn/trunk@88 2bbb7eff-a529-9590-31e7-b0007b416f81
