Add a NullHandler when setting up library logging

I was gunna write a test, but mocking ImportErrors is a PITA, so I decided to
just get my tox py26 working instead.  Tests seem to fail/pass as expected
without/with the inline NullHanlder.

Closes-Bug: 1212861

Change-Id: I20207374a77ee9969ab201c3a57e4caf40c02a61

swiftclient/client.py

@@ -35,7 +35,22 @@ try:
 except ImportError:
     HTTPSConnectionNoSSLComp = HTTPSConnection
 
+
+try:
+    from logging import NullHandler
+except ImportError:
+    class NullHandler(logging.Handler):
+        def handle(self, record):
+            pass
+
+        def emit(self, record):
+            pass
+
+        def createLock(self):
+            self.lock = None
+
 logger = logging.getLogger("swiftclient")
+logger.addHandler(NullHandler())
 
 
 def http_log(args, kwargs, resp, body):