Remove hardcoded paths from MPMs and move them to a more central

place.  Expand paths in httpd-std.conf in a similar fashion as we do
in our headers.

Submitted by:	Pier Fumagalli <pier@betaversion.org>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94431 13f79535-47bb-0310-9956-ffa450edef68