*) Fix intermittent SEGV in ap_proxy_cache_error() in

src/modules/proxy_util.c where a NULL filepointer and temporary
filename were closed and unlinked.

*) Fix inconsistant error messages reported by mod_proxy

PR:		3178
Submitted by:	Graham Leggett <minfrin@sharp.fm>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@83145 13f79535-47bb-0310-9956-ffa450edef68