Old clients really don't want to see "Content-Encoding: gzip". So now we

preserve the encoding given by the AddEncoding directive.  This allows us,
for example, to move forward with things like "AddEncoding deflate .df",
while preserving backwards brokenness with "AddEncoding x-gzip .gz".

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@80192 13f79535-47bb-0310-9956-ffa450edef68