Update __init__.py

VERSION[4] = '' upon install, so the test compares a string to an int and gets an error.
fix IndexError when len(VERSION) < 5
Fix: Possible problem for the case len(VERSION) > 5.
Merge branch 'patch-1' of https://github.com/slyde56/pyinstaller into issue-1109

Conflicts:
	PyInstaller/__init__.py
Merge branch 'issue-1109' into python3.

THis fixes #1109 and closes #1116.