[EBCDIC] Port Paul Gilmartin's CRLF patch from 1.3. This replaces most

of the \015, \012, and \015\012 constants with macros.
Submitted by:	Greg Ames
Reviewed by:	Jeff Trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@84998 13f79535-47bb-0310-9956-ffa450edef68