Add paramiko/pycrypto atfork workaround (can back out later if not useful), tweak error

message text per skvidal's suggestion

lib/ansible/connection.py

@@ -70,7 +70,7 @@ class ParamikoConnection(object):
             )
         except Exception, e:
             if str(e).find("PID check failed") != -1:
-                raise errors.AnsibleError("paramiko version issue, please upgrade paramiko on the overlord")
+                raise errors.AnsibleError("paramiko version issue, please upgrade paramiko on the machine running ansible")
             else: 
                 raise errors.AnsibleConnectionFailed(str(e))
         return self

lib/ansible/runner.py

@@ -34,11 +34,25 @@ from ansible import utils
 from ansible import errors
 from ansible import callbacks as ans_callbacks
     
+HAS_ATFORK=True
+try:
+    print "DEBUG: I have atfork"
+    from Crypto.Random import atfork
+except ImportError:
+    print "DEBUG: I have no atfork, this won't help my problem"
+    HAS_ATFORK=False
+
 ################################################
 
 def _executor_hook(job_queue, result_queue):
     ''' callback used by multiprocessing pool '''
 
+    # attempt workaround of https://github.com/newsapps/beeswithmachineguns/issues/17
+    # does not occur for everyone, some claim still occurs on newer paramiko
+    # this function not present in CentOS 6
+    if HAS_ATFORK:
+        atfork()
+
     signal.signal(signal.SIGINT, signal.SIG_IGN)
     while not job_queue.empty():
         try: