Add a + to the version number to indicate it came from CVS.

webtools/bugzilla/Bugzilla/Config.pm

@@ -89,7 +89,7 @@ our $webdotdir = "$datadir/webdot";
 Exporter::export_ok_tags('admin', 'db', 'locations');
 
 # Bugzilla version
-$Bugzilla::Config::VERSION = "2.21.1";
+$Bugzilla::Config::VERSION = "2.21.1+";
 
 use Safe;