git-subrepos: revert respects specified location to save .orig files

This patch makes revert in git subrepos save .orig files where the user wants
them by using the cmdutil.origpath function.

mercurial/subrepo.py

@@ -1910,7 +1910,7 @@ class gitsubrepo(abstractsubrepo):
             status = self.status(None)
             names = status.modified
             for name in names:
-                bakname = "%s.orig" % name
+                bakname = cmdutil.origpath(self.ui, self._subparent, name)
                 self.ui.note(_('saving current version of %s as %s\n') %
                         (name, bakname))
                 self.wvfs.rename(name, bakname)

tests/test-subrepo-git.t

@@ -875,6 +875,16 @@ revert the subrepository
   $ hg status --subrepos
   ? s/barfoo
 
+revert moves orig files to the right place
+  $ echo 'bloop' > s/foobar
+  $ hg revert --all --verbose --config 'ui.origbackuppath=.hg/origbackups'
+  reverting subrepo ../gitroot
+  creating directory: $TESTTMP/tc/.hg/origbackups
+  saving current version of foobar as $TESTTMP/tc/.hg/origbackups/foobar.orig
+  $ ls .hg/origbackups
+  foobar.orig
+  $ rm -rf .hg/origbackups
+
 show file at specific revision
   $ cat > s/foobar << EOF
   > woop    woop