Adding the south schema migration app (http://south.aeracode.org/).

 - Legacy-Id: 2118

Author: levkowetz

ietf/settings.py

@@ -123,6 +123,7 @@
     'django.contrib.sitemaps',
     'django.contrib.admin',
     'django.contrib.humanize',
+    'south',
     'ietf.announcements',
     'ietf.idindex',
     'ietf.idtracker',

south/.gitignore

@@ -0,0 +1 @@
+/*.pyc

south/__init__.py

@@ -0,0 +1,6 @@
+"""
+South - Useable migrations for Django apps
+"""
+
+__version__ = "0.6.2"
+__authors__ = ["Andrew Godwin <andrew@aeracode.org>", "Andy McCurdy <andy@andymccurdy.com>"]

south/db/.gitignore

@@ -0,0 +1 @@
+/*.pyc

south/db/__init__.py

@@ -0,0 +1,17 @@
+
+# Establish the common DatabaseOperations instance, which we call 'db'.
+# This code somewhat lifted from django evolution
+from django.conf import settings
+import sys
+if hasattr(settings, "SOUTH_DATABASE_ADAPTER"):
+    module_name = settings.SOUTH_DATABASE_ADAPTER
+else:
+    module_name = '.'.join(['south.db', settings.DATABASE_ENGINE])
+
+try:
+    module = __import__(module_name,{},{},[''])
+except ImportError:
+    sys.stderr.write("There is no South database module for the engine '%s' (tried with %s). Please either choose a supported one, or check for SOUTH_DATABASE_ADAPTER settings, or remove South from INSTALLED_APPS.\n" 
+                     % (settings.DATABASE_ENGINE, module_name))
+    sys.exit(1)
+db = module.DatabaseOperations()