Merge branch 'maint'

* maint:
  Start preparing Release Notes for 1.5.0.3
  Documentation: git-remote add [-t <branch>] [-m <branch>] [-f] name url
  Include config.mak in doc/Makefile
  git.el: Set the default commit coding system from the repository config.
  git-archimport: support empty summaries, put summary on a single line.
  http-push.c::lock_remote(): validate all remote refs.
  git-cvsexportcommit: don't cleanup .msg if not yet committed to cvs.

git-cvsexportcommit.perl

@@ -248,13 +248,14 @@ if ($opt_c) {
 	die "Exiting: The commit did not succeed";
     }
     print "Committed successfully to CVS\n";
+    # clean up
+    unlink(".msg");
 } else {
     print "Ready for you to commit, just run:\n\n   $cmd\n";
 }
 
 # clean up
 unlink(".cvsexportcommit.diff");
-unlink(".msg");
 
 sub usage {
 	print STDERR <<END;