Tweak the lib fix so it will work with py2exe too

SickBeard.py

@@ -33,7 +33,7 @@ import traceback
 import getopt
 
 # allow libraries to import each other
-sys.path.append(os.path.join(os.path.dirname(__file__), 'lib'))
+sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), 'lib'))
 
 import sickbeard