mod_proxy uses "char *p" and "pool *pool" a whole bunch ... which is not

exactly the style we use elsewhere in the code.  Clean this up.

I'm not sure, but proxy_cache.c had some interesting -Wshadow warnings
involving a global "time_t now" and local "time_t now"s... I changed the
name of the global to "garbage_now".

Other similar fixes.  This is just syntactic sugar similar to the indent
changes.  I avoided fixing obvious segfault bugs I saw while doing this.

The entire server should now pass gcc -Wshadow, which makes me a bit
happier.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79279 13f79535-47bb-0310-9956-ffa450edef68