Explicitly pass socket type and family for getaddrinfo,

to make test work on Solaris.
Disable gethostbyaddr IDNA test for now as there is no
reverse DNS entry for the IPv6 address of the test name.

Lib/test/test_socket.py

@@ -641,8 +641,10 @@ class GeneralModuleTests(unittest.TestCase):
         # these should all be successful
         socket.gethostbyname('испытание.python.org')
         socket.gethostbyname_ex('испытание.python.org')
-        socket.getaddrinfo('испытание.python.org',0)
-        socket.gethostbyaddr('испытание.python.org')
+        socket.getaddrinfo('испытание.python.org',0,socket.AF_UNSPEC,socket.SOCK_STREAM)
+        # this may not work if the forward lookup choses the IPv6 address, as that doesn't
+        # have a reverse entry yet
+        # socket.gethostbyaddr('испытание.python.org')
 
 @unittest.skipUnless(thread, 'Threading required for this test.')
 class BasicTCPTest(SocketConnectedTest):