The prompt in debug console with IPython (PY-20685)

We need to add message to output in order to notify ide side about using IPython

python/helpers/pydev/pydevconsole.py

@@ -359,6 +359,8 @@ def get_interpreter():
     except AttributeError:
         interpreterInterface = InterpreterInterface(None, None, threading.currentThread())
         setattr(__builtin__, 'interpreter', interpreterInterface)
+        sys.stderr.write(interpreterInterface.get_greeting_msg())
+        sys.stderr.flush()
 
     return interpreterInterface