The "Connection" header could be sent back with multiple "close"

tokens.  Not an error, but a waste.

PR:		1683
Submitted by:	Ronald.Tschalaer@psi.ch
Reviewed by:	Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79911 13f79535-47bb-0310-9956-ffa450edef68