django manage.py load settings before we launch every worker. This

change remove it from loaded modules on reload. While we are here we
remove any django module preloaded so we can upgrade django version to
on HUP. fix issue #197.

gunicorn/app/djangoapp.py

@@ -62,12 +62,17 @@ class DjangoApplication(Application):
 
     def no_settings(self, path, import_error=False):
         if import_error:
-            error = "Error: Can't find the settings in your PYTHONPATH"
+            error = "Error: Can't find '%s' in your PYTHONPATH.\n" % path
         else:
             error = "Settings file '%s' not found in current folder.\n" % path
         sys.stderr.write(error)
         sys.stderr.flush()
         sys.exit(1)
+
+    def activate_translation(self):
+        from django.conf import settings
+        from django.utils import translation
+        translation.activate(settings.LANGUAGE_CODE)
         
     def validate(self):
         """ Validate models. This also ensures that all models are 
@@ -90,13 +95,15 @@ class DjangoApplication(Application):
     def load(self):
         from django.conf import ENVIRONMENT_VARIABLE
         from django.core.handlers.wsgi import WSGIHandler
+                
         os.environ[ENVIRONMENT_VARIABLE] = self.settings_modname
         # setup environ
         self.setup_environ()
         self.validate()
+        self.activate_translation()
         return WSGIHandler()
 
-class DjangoApplicationCommand(Application):
+class DjangoApplicationCommand(DjangoApplication):
     
     def __init__(self, options, admin_media_path):
         self.usage = None
@@ -105,6 +112,9 @@ class DjangoApplicationCommand(Application):
         self.options = options
         self.admin_media_path = admin_media_path
         self.callable = None
+        self.settings_modname = os.environ[ENVIRONMENT_VARIABLE]
+        self.project_path = os.getcwd()
+
         self.do_load_config()
 
     def load_config(self):
@@ -138,10 +148,30 @@ class DjangoApplicationCommand(Application):
         for k, v in self.options.items():
             if k.lower() in self.cfg.settings and v is not None:
                 self.cfg.set(k.lower(), v)
+       
+    def setup_environ(self):
+        for modname in sys.modules.keys():
+            if modname.startswith('django') or \
+                    'settings' in modname.split('.'):
+                del sys.modules[modname]
+
+        # add the project path to sys.path
+        sys.path.insert(0, self.project_path)
+        sys.path.append(os.path.join(self.project_path, os.pardir))
+
         
+        super(DjangoApplicationCommand, self).setup_environ()
+
+
     def load(self):
+        # setup environ
+        self.setup_environ()
+        self.validate()
+        self.activate_translation()
+
         from django.core.servers.basehttp import AdminMediaHandler, WSGIServerException
         from django.core.handlers.wsgi import WSGIHandler
+
         try:
             return  AdminMediaHandler(WSGIHandler(), self.admin_media_path)
         except WSGIServerException, e: