Update the header token parsing code to allow LWS between the token word
and the ':' seperator.  [PR 16520]
[submitted: Kris Verbeeck <kris.verbeeck@advalvas.be> and
            Nicel KM <mnicel@yahoo.com>]
[Reviewed: <coad@measurement-factory.com> and
           Paul J. Reder]


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@100492 13f79535-47bb-0310-9956-ffa450edef68