Avoid setting the clipping region, the ink, and the transformation of the medium to its original values when the weren't altered in the first place.
Avoid setting the clipping region, the ink, and the transformation of the
medium to its original values when the weren't altered in the first place.

Changing the region and the transformation invalidated all cached
regions and transformations which were then immediately recomputed to
the same values.

All demos are now MUCH faster.  In particular, the sliders are now
very smooth.  There is much less flickering in buttons and menus and
such.

antifuchs/mcclim,swflint/McCLIM,swflint/McCLIM,onixie/mcclim,slyrus/mcclim,slyrus/mcclim,onixie/mcclim,antifuchs/mcclim,swflint/McCLIM,onixie/mcclim