HTTP Pipelined connections cause ruid2 to not serve content

[monkburger]

If you enable Pipelined connections within say, FF, Chrome, etc, you will see something like this from within ruid2, which causes failures to display content:

[Sun Mar 06 12:40:21.255723 2016] [:error] [pid 31114] mod_ruid2 test.server.com GET /images/whatever.gif HTTP/1.1 chdir to /home/virtfs/blahblah failed (No such file or directory)

To reproduce this, simply enable HTTP Pipelined connections within a browser - iOS Safari has Pipelining enabled by default for images, but desktop Firefox/Chrome/Safari apparently all have it disabled by default.

A workaround is to disable KeepAlives within Apache when RUID2 is enabled.