FIX: add support for rpath patching in OSX

The code adds rpaths to allow local relative libraries to get loaded at
link time, for linux only, using the patchelf binary.  This commit adds
some routines to do the equivalent thing in OSX, using the ``otool`` and
``install_name_tool`` binaries.
FIX: add some workarounds for OSX problems

Look for shared libraries ending in ``dylib``.

Add a header path to cmake for Qt framework.
add note about using VS 2010 when building against python 3.3
Merge pull request #3 from matthew-brett/osx-fixes

Osx fixes
use real path to cmake, this fixes bug PYSIDE-99
Added --ignore-git option
Show info about the running process in log
Fixed PATH environment setup
Change README extension to rst
Fixed setup script after changing README extension
Update distribute_setup script to latest version
Revisiting setup script documentation
Update classifiers
Update README.rst
Option --version can not be used together with option --ignore-git
Build shiboken docs when sphinx package is installed
Added shiboken docs to distribution
Update README.rst
Fix building on Ubuntu 13.04
Update README