Clean up the input filtering a lot. This makes the code a bit easier

to follow.  This code works for browser based requests and line-based
telnet requests.  It is untested with character-based telnet requests.
I will be testing that very soon.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86549 13f79535-47bb-0310-9956-ffa450edef68