Fixed #7728 -- Modified the output check in the admin script tests. Checking...

Fixed #7728 -- Modified the output check in the admin script tests. Checking for pyc is a CPython-specific check, and it breaks CPython if pyc files aren't generated (due to permission problems, etc). Thanks to Maciej Fijalkowski (fijal) for the report and fix.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7915 bcc190cf-cafb-0310-a4f2-bffc1f526a37