This prepares the file to be moved from mi to dix. This patch
was done mechanically with the included scripts 'fix-miregion' run over
the entire X server and 'fix-miregion-private' run over
include/regionstr.h and mi/miregion.c.

Reviewed-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Keith Packard <keithp@keithp.com>