keyword: offer additional datefilters when the extension is enabled

keyword: offer additional datefilters when the extension is enabled

Before the additional datefilters (utcdate, svnisodate, svnutcdate)
were used when kwtemplater was initialized. Now they always be used
once the extension is enabled.

--- a/hgext/keyword.py	Mon Mar 14 12:19:59 2011 +0100
+++ b/hgext/keyword.py	Mon Mar 14 12:26:50 2011 +0100
@@ -126,6 +126,10 @@
     '''
     return util.datestr((text[0], 0), '%Y-%m-%d %H:%M:%SZ')
 
+templatefilters.filters.update({'utcdate': utcdate,
+                                'svnisodate': svnisodate,
+                                'svnutcdate': svnutcdate})
+
 # make keyword tools accessible
 kwtools = {'templater': None, 'hgcmd': ''}
 
@@ -187,9 +191,6 @@
                                   for k, v in kwmaps)
         else:
             self.templates = _defaultkwmaps(self.ui)
-        templatefilters.filters.update({'utcdate': utcdate,
-                                        'svnisodate': svnisodate,
-                                        'svnutcdate': svnutcdate})
 
     @util.propertycache
     def escape(self):