macos:  Set fillPat in FillRect_patch()
macos:  Store just a pointer to Pattern
macos:  Move fill params into base struct
macos:  Cull rectangular_fill_params
macos:  Factor out frame_rect()
macos:  Segregate trap patches from implementation
macos:  Add _StdRect patch
macos:  Bottleneck rect routines through StdRect()
macos:  Avoid _StdRect trap dispatch in frame_rect()
Merge branch 'StdRect'
macos:  Clip to clipRgn bbox in StdRect_patch()
[NEW] clipping.mac:  Test QuickDraw rect clipping