Added Python binding for dealer

This binding was moved here from cocaine-framework-python repo
Added debian package python-cocaine-dealer

This package stores all Python binding files
Up version for build with eblob v0.19
Distribute @tinybit's ZeroMQ C++ bindings.

As Dealer uses a hand-patched version of ZeroMQ C++ bindings, distribute
it together with the source code as a foreign module.
Detect ZeroMQ presence with zmq.h, not zmq.hpp.

Since ZeroMQ 3.0, the C++ binding is distibuted separately (bundled with
the source in our case), so the library detection shouldn't rely on it.
Cocaine detection code.
Merge pull request #10 from toshic/python-binding

Python binding
python-distutils.mk on Lucid overrides value of DEB_PYTHON_SETUP_CMD variable.
Variable is placed after includes now.
Added python-dev to build depends