"force-response-1.0" now only applies to requests which are HTTP/1.0 to begin

"force-response-1.0" now only applies to requests which are HTTP/1.0 to begin
with.  "nokeepalive" now works for HTTP/1.1 clients.  Added "downgrade-1.0"
which causes Apache to pretend it received a 1.0.  Additionally mod_browser
now triggers during translate_name to workaround a deficiency in the
header_parse phase.

PR:	875
Submitted by:	Dean Gaudet
Reviewed by:	Roy Fielding, Ralf S. Engelschall, Jim Jagielski

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3@78826 13f79535-47bb-0310-9956-ffa450edef68