Fixed #5522 -- Moved make-messages, compile-messages and daily-cleanup into django-admin.py.

They are now called  "makemessages", "compilemessages" and "cleanup". This is
backwards incompatible for make-messages.py and compile-messages.py, although
the old executables still exist for now and print an error pointing the caller
to the right command to call.

This reduces the number of binaries and man pages Django needs to install.

Patch from Janis Leidel.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7844 bcc190cf-cafb-0310-a4f2-bffc1f526a37