New _m() gettext wrapper with smart detection of plugin domains. Plugin base class registers your gettext files if present at initialization.

update_pot.sh replaced with update_po_templates.php which can do core, plugins, or all (default).
Top-level Makefile added to build .mo files for plugins as well as core.

As described on list:
http://lists.status.net/pipermail/statusnet-dev/2009-December/002869.html

plugins/Mapstraction/usermap.php

@@ -68,7 +68,7 @@ class UsermapAction extends MapAction
         if ($this->page == 1) {
             return $base;
         } else {
-            return sprintf(_("%s map, page %d"),
+            return sprintf(_m("%s map, page %d"),
                            $base,
                            $this->page);
         }