Various cwm patches

In my thesis project I've used and patched CWM (minor things). If
someone find these patch interesting or useful, feel free to use it.
Summary of changes:
	* setup.py: corrected a small bug wich prevented installation via
	 "python setup.py install"
	* cwm.py: substituted standard streams (sys.argv, sys.stdout) with
	 variables, so it is possible to call 'doCommand' function from
	 another python program.
	* webAccess.py + redland_vfs: modified webAccess.py to allow
	 fetching data from a Redland DB backend. Currently supported SQLite
	 and MySQL
Attached are the modified files.
Thanks to all
-- 
Alessio Carenini