EOLs sent by external rewritemaps are now consumed

as whole. That way, on systems with more than one EOL character
rewritemap programs no longer need to switch stdout to binary
mode.

PR: 25635


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@102404 13f79535-47bb-0310-9956-ffa450edef68