Merge pull request winpython#27 from stonebig/release201411 release 201411 changelog

Fixed Ticket winpython#94: default root directory is now the installe… …r directory https://sourceforge.net/p/winpython/tickets/94/

Code refactoring + fixed/moved winpython/tests.py to ./test.py 

new version 

Updated changelogs for 2.7.5.2 and 3.3.2.2 

Launchers: added support for arbitrary environment variable definition, using the "environment" section of the winpython.ini configuration file

Added changelogs for 2.7.5.0 and 3.3.2.0 

WinPython Control Panel: added shortcut to command prompt 

Upgraded SciTE to v3.3.1 

diff.py: new script to generate automatically changelogs (new package… …s, upgraded packages, removed packages from a version of WinPython to another)