The attached patch resolves the intermittent test_xmlrpc failures
reported by Neal Norwitz[0].

test_xmlrpc starts the XMLRPC server with a socket timeout.  This puts
the socket into non-blocking mode which is incompatible with the use of
socket.makefile as used by SocketServer.  To work around this the test
was specifically ignoring temporary read errors but the ignore was no
longer working.

The patch resolves this by removing the call to socket.settimeout and
the code to ignore temporary read errors.  
 
I also had to change the `numrequests' parameter in
FailingServerTestCase from 2->1.  This test case only makes a single
request per test (like the others) so numrequests=2 caused the test to hang.

[0]http://mail.python.org/pipermail/python-3000/2007-October/011073.html