Platform tests for 2.2.0

[wiredfool]

I've tested, and are working:

• Ubuntu 10.04LTS w/ py 2.6.5 (system python)
• Raspian Wheezy w/ py 2.7.3 (system python)
• Raspian Wheezy w/ py 3.2.3 (alternate system python)

[cgohlke]

All tests pass on Windows with CPython 2.6, 2.7, 3.2, and 3.3, 32 and 64 bit. CPython 3.4a3 also works. PyPy 2.1.0 segfaults during test_imagefont.

[aclark4life]

I think we need a "PyPy champion" to worry about things like PyPy test failures…

[aclark4life]

Documented in 92ed8bf

[wiredfool]

Yeah, we do need to pay attention to pypy if we're going to support it.

[wiredfool]

Also tested 10.7: py2.6, 2.7, 3.2, 3.3

[wiredfool]

I'm not getting segfaults on pypy2.1 on Ubuntu 12.04 x64. (ppa build). I'm getting a bunch of test failures @ Imagefile.py line 159 and one issue with webp_metadata.

[wiredfool]

Pypy 2.1.0 on Ubuntu 12.04 x64 now works. There were some interesting 32bit/64bit issues in the webp metadata that I haven't seen before.

[d-schmidt]

All tests are passing with:
pillow 2.2.1
win7 pro 64
python 2.7 x86, py32 x86 and py33 64.