md5 was missed during the Great Renaming's reflection in compat.h.

PR:		2188
Submitted by:	Kim Yong-ook <ghost@netian.com>
Reviewed by:	Ken Coar


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81151 13f79535-47bb-0310-9956-ffa450edef68