Fixed #6476 -- Added option to makemessages management command to disable...

Fixed #6476 -- Added option to makemessages management command to disable wrapping of long lines. Thanks to pytechd for the initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14454 bcc190cf-cafb-0310-a4f2-bffc1f526a37