Added two sample MPO image files for testing.

Both MPO files represent 3D images and thus have a left image and a
right image. Both were taken with a Nintendo 3DS in Breakheart
Reservation in Saugus, MA.
Moved images to correct place.

Accidentally uploaded images to their initial test location, not the
proper location used by other tests.
First steps toward MPO support.

Allows Pillow to distinguish between JPEGs and MPOs, and provides some
MPO metadata handling. Does not yet handle multiple frames.
Activated MPO detection.

Added MPO to the list to be checked. Removed the superfluous second os
import. Added OS X & Komodo work files to .gitignore.
Further populated Exif values in TiffTags.

Added lots more of the possible Exif values per the EXIF specifications.
Basic MPO reading works, seek is partially there.
Corrected offset for MPO frames.
Merge branch 'master' of https://github.com/python-pillow/Pillow
Enabled seeking in MPO files.

Note to self: either put the offset in the load_seek() definition or
the tile definition, not both.
Fixed typo in new MPO unit test.
Minor refactoring per discussion and MPO docs.
Implemented MP attribute breakdown with tests.
Merge branch 'master' of https://github.com/python-pillow/Pillow
Fixed import for Python 3.

Fixed the trivial import bug that prevented the Python 3 version of MPO
from running. On the way fixed the trivial C bug that prevented
Convert.c from compiling properly in a Mac OS X environment for a
Python 3 target.
Changed PIL to Pillow for newly supported formats.
Merge branch 'master' of https://github.com/python-pillow/Pillow
Removed unnecessary uint definition.
Merge branch 'master' of https://github.com/python-pillow/Pillow
Updates to MPO handler based on review.

Took out the explicit reference to the MPO Plug-in in Image as it’s now
indirectly referenced via the JPEG Plug-in. Removed the direct MPO
Plug-in registration as it’s now shared with the JPEG Plug-in.
Commented on assertion.
Merge pull request #822 from Feneric/master

MPO Read Support