This should fix issues reported in http://lists.wikimedia.org/pipermail/wikitech-l/2011-September/055212.html Lots of these tests loaded the exif extension dynamically, but then didn't reset $wgShowEXIF var properly.
Also change some of the markTestIncomplete to markTestSkipped as that seemed more correct.
was starting to get crowded with supporting image files.
This changes the following things
*Moves the media files to a different directory
*Changes the references to the files to reference there new locations
2 semi-unrelated changes
*Modify the README file that was basically giving credit for the images where due to explain what the images are for.
*set svn:mime-type to image/svg+xml for the svg files.
* rename testTiffFile to something more descriptive
* unserialize the serialized results before comparing
Also follow-up r92635 - rm an extra wfDl that was outside any functions, and I'm assuming accidentally there (?)
