ap_*_client_block to ap_http_filter (aka HTTP_IN).  This is the
only appropriate place for limit checking to occur (otherwise,
chunked input is not correctly limited).

Also changed the type of limit_req_body to apr_off_t to match the
other types inside of HTTP_IN.  Also made the strtol call for
limit_req_body a bit more robust.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92700 13f79535-47bb-0310-9956-ffa450edef68