Fix the char-at-a-time problem. To fix this, we just buffer up a line

until we have found a LF, then we send the data up to the previous filter.
I have test on Linux with both Linux's telnet and Win 98 telnet.  Win98
uses a char-at-a-time, so this should solve the problem.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86457 13f79535-47bb-0310-9956-ffa450edef68