Fix some more Win32-only problems: treat "{.*/}nul" on Win32
	the way we do "/dev/null" on Unix, and mention the inapplicability
	of the User directive if encountered on Win32.

PR:		2078, 2303
Submitted by:	Ken Parzygnat <kparz@raleigh.ibm.com>
Reviewed by:	Ken Coar


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82311 13f79535-47bb-0310-9956-ffa450edef68