python: proper support for cython
python: copying code from capstone/ to pyx/ rather than duplicating code
python: add compile_args for cython
python: cleaning pkg directory before installing
suite: cleaning benchmark.py
python: cleanup setup*.py
python: make clean should not remove everything in pyx/
python: make install is the preferred way to install python binding
python: rename pyx/ to cython/
Merge branch 'cython' into next