handle xmlrpclib.Fault exceptions nicely

[kvalo]

2 patches applied:

31e41e6748ba rt2x00usb: do not anchor rx and tx urb's
2e0df2442185 rt2x00usb: fix anchor initialization

Accepted/Under review/Changes requested/Rejected/New/Deferred/Superseded/aWaiting upstream/not aPplicable/rFc/aBort? a
Traceback (most recent call last):
  File "/home/kvalo/bin/pwcli", line 2220, in <module>
    main()
  File "/home/kvalo/bin/pwcli", line 2217, in main
    pwcli.run_shell()
  File "/home/kvalo/bin/pwcli", line 2002, in run_shell
    args.func(args)
  File "/home/kvalo/bin/pwcli", line 1563, in cmd_commit
    patch.set_state_name(state)
  File "/home/kvalo/bin/pwcli", line 521, in set_state_name
    self.pw.rpc.patch_set(self.get_id(), params)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1243, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1602, in __request
    verbose=self.__verbose
  File "/usr/lib/python2.7/xmlrpclib.py", line 1283, in request
    return self.single_request(host, handler, request_body, verbose)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1316, in single_request
    return self.parse_response(response)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1493, in parse_response
    return u.close()
  File "/usr/lib/python2.7/xmlrpclib.py", line 800, in close
    raise Fault(**self._stack[0])
xmlrpclib.Fault: <Fault 1: "<class 'django.db.utils.OperationalError'>:(1040, 'Too many connections')">