* Reduce memory consumption when processing very long lines by at least

  doubleing the size of the new buffer each time.

PR: 48024
Submitted by: Basant Kumar Kukreja <basant.kukreja sun.com>
Reviewed by: rpluem


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@826772 13f79535-47bb-0310-9956-ffa450edef68