[plugins] director: fcgi to abort backend connection directly as PHP-FPM doesn't seem to understand AbortRequest
[plugins] director: so let's do a little test...
Revert "[plugins] director: so let's do a little test..."

This reverts commit ee6632a0fe36aa7a0eda98b39e20f726efd8945b.
[plugins] director: code cleanup
[plugins] director: fcgi backendName field refactoring
[plugins] director: fcgi dead code cleanup
[plugins] director: symbol name changes
debian things
added missing includes
[plugins] director: more code refactors for cleanup
[plugins] director: more code cleanup (wordings)
my autogen cleanups
cmake cleanup
cleanup
cmake refactors
dead file cleanup
[examples] app1: also abort on SIGINT
[plugins] director: fcgi code cleanups and documentation
update
[http] HttpConnection: improves error logging. refs #98