Deprecated erpc like the TODO said

eventlet/tpool.py

@@ -99,9 +99,11 @@ def execute(meth,*args, **kwargs):
     rv = erecv(e)
     return rv
 
-## TODO deprecate
-erpc = execute
-
+def erpc(meth, *args, **kwargs):
+    import warnings
+    warnings.warn("erpc is deprecated.  Call execute instead.",
+                  DeprecationWarning, stacklevel=2)
+    execute(meth, *args, **kwargs)
 
 
 def proxy_call(autowrap, f, *args, **kwargs):