[1.0.X]: Fixed #10094 -- Fixed the `include` and `extends` template tags to...

[1.0.X]: Fixed #10094 -- Fixed the `include` and `extends` template tags to work with filenames with spaces, patch from mcroydon.

Backport of r10211 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10212 bcc190cf-cafb-0310-a4f2-bffc1f526a37