Squashed 'pykit/deps/pycparser/' content from commit 632ce6e

git-subtree-dir: pykit/deps/pycparser
git-subtree-split: 632ce6e021e73b2a516470324e4e29a8e6df1b21
Merge commit '672d753b5afe5e40f3d43eb0386d3914b8036dc9' as 'pykit/deps/pycparser'
Add patched pycparser as a subtree