Update ChangeLog and version for 0.12.1

ChangeLog

+2014-01-24, v0.12.1
+	* Fix a bug affecting import and export scripts
+
 2013-11-04, v0.12
 	* Add support for OpenBSD and NetBSD images (partition resizing is not
 	  supported yet)

docs/conf.py

@@ -45,9 +45,9 @@ copyright = u'2011, 2012, 2013 GRNET S.A. All rights reserved'
 # built documents.
 #
 # The short X.Y version.
-version = '0.12'
+version = '0.12.1'
 # The full version, including alpha/beta/rc tags.
-release = '0.12'
+release = '0.12.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

version.m4

-m4_define([devflow_version], [0.12])
+m4_define([devflow_version], [0.12.1])