Somewhat reworked "make depend" rules, which result in

	dependencies that use "$(INCDIR)" for the src/include
	directory.  Why?  Because it makes it a lot easier to
	spot exceptions (like the proxy's outbound includes of
	mod_mime.h, et cetera).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80278 13f79535-47bb-0310-9956-ffa450edef68