[Not sure whether this will be included in 2.0.46, adjust CHANGES if necessary]

Introduce "prefer-language" environment variable,
which allows to influence the negotiation process on request basis
to prefer a certain language, e.g.:

SetEnvIf Request_URI ^/manual/foo/ prefer-language=foo

Reviewed by: Jeff Trawick, Will Rowe, Erik Abele


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@100045 13f79535-47bb-0310-9956-ffa450edef68