New branch patched-5 (based on patched-4 + back ported upstream + add-qt5-support)

*NOTE*: This pull request requires to update the branch [svn-mirror](https://github.com/commontk/PythonQt/tree/svn-mirror). See pull request #14. It should be better to create a new branch other than merging `patched-5` into `patched-4`, but it seems I cannot propose to create a branch in the upstream repository.

(from the updated README.md file)

### patched-5 

* Based on patched-4 + backported upstream: [r246](http://sourceforge.net/p/pythonqt/code/246/), [r247](http://sourceforge.net/p/pythonqt/code/247/), [r248](http://sourceforge.net/p/pythonqt/code/248/) + branch: [add-qt5-support](https://github.com/commontk/PythonQt/tree/add-qt5-support)
* List of features
  * Qt 5.x support:
    * Modules QtWidgets and QtPrintSupport only wrapped if selected, but they will stay in the PythonQt.QtGui namespace for compatibily reason. 
    * Module QtWebKitWidgets only wrapped if selected, but it stays in the PythonQt.QtWebKit namespace for compatibily reason.
    * CMake forces the wrapping of the selected modules dependency (e.g. QtPrintSupport requires QtWidgets, QtGui and QtCore)
  * CMake variable `PythonQt_QT_VERSION` to select the version of Qt to wrap (4 or 5)