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/MapstractionPlugin.php

@@ -177,7 +177,7 @@ class MapstractionPlugin extends Plugin
         $action->elementStart('div', array('id' => 'entity_map',
                                          'class' => 'section'));
 
-        $action->element('h2', null, _('Map'));
+        $action->element('h2', null, _m('Map'));
 
         $action->element('div', array('id' => 'map_canvas',
                                     'class' => 'gray smallmap',
@@ -188,7 +188,7 @@ class MapstractionPlugin extends Plugin
                                     array('nickname' => $action->trimmed('nickname')));
 
         $action->element('a', array('href' => $mapUrl),
-                         _("Full size"));
+                         _m("Full size"));
 
         $action->elementEnd('div');
     }

plugins/Mapstraction/allmap.php

@@ -68,10 +68,10 @@ class AllmapAction extends MapAction
         }
 
         if ($this->page == 1) {
-            return sprintf(_("%s friends map"),
+            return sprintf(_m("%s friends map"),
                            $base);
         } else {
-            return sprintf(_("%s friends map, page %d"),
+            return sprintf(_m("%s friends map, page %d"),
                            $base,
                            $this->page);
         }

plugins/Mapstraction/locale/Mapstraction.po

@@ -0,0 +1,48 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2009-12-07 20:38-0800\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: allmap.php:71
+#, php-format
+msgid "%s friends map"
+msgstr ""
+
+#: allmap.php:74
+#, php-format
+msgid "%s friends map, page %d"
+msgstr ""
+
+#: map.php:72
+msgid "No such user."
+msgstr ""
+
+#: map.php:79
+msgid "User has no profile."
+msgstr ""
+
+#: usermap.php:71
+#, php-format
+msgid "%s map, page %d"
+msgstr ""
+
+#: MapstractionPlugin.php:180
+msgid "Map"
+msgstr ""
+
+#: MapstractionPlugin.php:191
+msgid "Full size"
+msgstr ""

plugins/Mapstraction/map.php

@@ -69,14 +69,14 @@ class MapAction extends OwnerDesignAction
         $this->user = User::staticGet('nickname', $nickname);
 
         if (!$this->user) {
-            $this->clientError(_('No such user.'), 404);
+            $this->clientError(_m('No such user.'), 404);
             return false;
         }
 
         $this->profile = $this->user->getProfile();
 
         if (!$this->profile) {
-            $this->serverError(_('User has no profile.'));
+            $this->serverError(_m('User has no profile.'));
             return false;
         }
 

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);
         }