Configuration Settings can now be changed with the -e command line argument
execution of 4grab has been moved to 4grab.py, but should also still work with download.py
Windows was giving trouble with the os.getenv(HOME) which can be executed in the python shell and IDLE and will return C:\Documents and Settings\username\, but when running a script it will return None.
If os.getenv(HOME) is None, then now the exec dir will be used instead
