How can we avoid recording empty HTTP requests to object log as errors?

See GsDevKit/GsDevKit_home#169 and GsDevKit/zinc#83 for a suggested patch to ZnUnknownHttpMethod>>signal. 

This patch is working around the issue that gsApplicationTools logs all zinc errors to the object log, and these empty methods errors are pretty common ... 

Perhaps the gsApplicationTools implementation should filter out these empty request strings before they ever get the ZnServer