followup: mod_negotiation and php

As a followup, I'd like to document what worked (for me) to address the problem. The issue, in summary, is that mod_negotiation thinks that PHP produces content of type application/x-httpd-php. It usually produces text/html of course, but there's no way for it to know that. mod_negotiation has infrastructure to consider a few other mime as "pseudo html" during the negotiation phase. Changing INCLUDES_MAGIC_TYPE in apache:src/include/httpd.h to application/x-httpd-php results in the behaviour you would hope for. I haven't got the chops to try to turn this into an acceptable patch. But the hack could work for others.