Pyp2rpm

* Exclude prereleases unless specifically selected (issue 141)
* Improve handling of PEP 440 requirements (issue 182)
* Avoid unnecessary PyPI downloads
* Avoid duplicate packages (issue 178)
* Exclude *.egg_info from the list of packages
* Use the new %pypi_source macro for Source URL (issue 172)

* Work around an error that occurred when setup.py contained print() calls
* Use the pythonX_version macro instead of "?.?" in pth and egg-info paths

* Make Python 3 the only default Python version for Fedora and Mageia (issue 163)

* Rebase Mageia template based on latest Python Packaging Policy (thanks Conan-Kudo for the PR)
* Bug fixes (issue 159)

* Use name convertor based on Automatic PyPI provides as default for Fedora
* Use the warehouse installation URL for XMLRPC client for PyPI
* Make Python 3 default python version for Fedora
* Stop creating -MAJOR.MINOR suffixed executables for each python version

* Make order of requires, scripts, modules and packages deterministic
* Add name convertor using standardized name format of the dependencies based on virtual Provides
* Update templates to follow the latest Packaging Guidelines for Python
* Include extras require in metadata extraction
* Enable generating sclized spec files using spec2scl