Convert ebcdic to xml, move it to platform, and add a basic index

file for the platform directory.

By the way, what is the status of the EBCDIC port for 2.0?  Are these
docs in any way accurate?

Submitted by: Tim Gerundt <tim@gerundt.de>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96942 13f79535-47bb-0310-9956-ffa450edef68