(CygbuildCmdMkpatchMain): undo and restore patched in srcdir

Signed-off-by: Jari Aalto <jari.aalto@cante.net>
(CygbuildPatchDiffstat): Add message: Patches touch files

Signed-off-by: Jari Aalto <jari.aalto@cante.net>
(CygbuildPatchApplyQuiltMaybe): better verbose handling

Signed-off-by: Jari Aalto <jari.aalto@cante.net>
(CygbuildCmdMkpatchMain): Copy also quilt .pc/ directory

Signed-off-by: Jari Aalto <jari.aalto@cante.net>