Changed the reverse() call for creating URLs to convert a "." in the reg-exp

pattern to a "." in the final output. This hides what is probably a bug in the
pattern (the user almost certainly should have written "\."), but it will avoid
a large number of "bug" reports about reverse().


git-svn-id: http://code.djangoproject.com/svn/django/trunk@8929 bcc190cf-cafb-0310-a4f2-bffc1f526a37