Pyinstaller should not extend sys.path (six package version too old)

**Original date**: 2013/09/15
**Original reporter**: _jimmykuu <jimmy DOT kuu AND gmail DOT  COOM >_

The PyInstaller/lib/six.py version is 1.0.0, I use ZODB4.0.0b3, it need six1.4.1.

When I use PyInstaller convert my program, the six1.4.1 been replaced with six1.0.1, and the program gone wrong.

So I replace PyInstaller/lib/six.py with six1.4.1, it's ok now.
