Compatibility Updates for Python 2.7.12

* dtls/openssl.py: support reading directly into given buffer instead
                     of forcing buffer copy (for ssl module compatibility)
	* dtls/sslconnection.py: in-situ receive support, as above
	* dtls/patch.py: various changes for compatibility with the ssl module
                   of Python 2.7.12; note that the ssl module's new
                   SSLContext is not supported
	* dtls/test/unit.py: changes to support the updated ssl module,
                       including fix of deprecation warnings
	* setup.py: increase version to 1.0.2

dtls/test/unit.py

@@ -78,7 +78,6 @@ class BasicSocketTests(unittest.TestCase):
 
     def test_constants(self):
         ssl.PROTOCOL_SSLv23
-        ssl.PROTOCOL_SSLv3
         ssl.PROTOCOL_TLSv1
         ssl.PROTOCOL_DTLSv1  # added
         ssl.CERT_NONE
@@ -574,6 +573,9 @@ class AsyncoreEchoServer(threading.Thread):
                 # Complete the handshake
                 self.handle_read_event()
 
+            def __hash__(self):
+                return hash(self.socket)
+
             def readable(self):
                 while self.socket.pending() > 0:
                     self.handle_read_event()