EBCDIC: Update util_md5.c routines to use APR-ized ap_MD5*()

routines.  As in 1.3, ap_md5digest() has a different function
signature when CHARSET_EBCDIC is defined :(


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85182 13f79535-47bb-0310-9956-ffa450edef68