decomp-permuter/perm_pycparser

Vendored copy of https://github.com/eliben/pycparser, with some patches to accept various C syntax extensions.

This is a copy of m2c's m2c_pycparser/ directory with the only difference being a renaming (to avoid conflicts
if both permuter and m2c are installed). Latest m2c commit: 1d1c4454a445326541305f83f2b0cb680a9ecb2d