Fixed request limit change to be more portable. Removed the server_rec

variables since compile-time control of the request-line, fieldsize, and
number of fields is sufficient.  Added a per-dir configuration directive
LimitRequestBody for setting a maximum request message body, with the
default of 0 meaning no limit.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81893 13f79535-47bb-0310-9956-ffa450edef68