*) mod_headers: support global replace in Header Edit

       PR 46594 (not 47066 as incorrectly recorded in change log)
            trunk: http://svn.eu.apache.org/viewvc?view=revision&revision=894036
                        http://svn.apache.org/viewvc?view=revision&revision=966059
                             2.2.x: http://people.apache.org/~niq/patches/46594.patch
                                                           (newly updated to fold in r966059)
                                                                +1: niq, rpluem, jim



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@989122 13f79535-47bb-0310-9956-ffa450edef68