Comment out prototype declarations, since the lack of instantiation

	causes some compilers to [reasonably] complain.  Also add some
	more information here and there, primarily from Dean's comments.

Submitted by:	Dean Gaudet, Roy Fielding


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77896 13f79535-47bb-0310-9956-ffa450edef68