Merge r1460243, add CHANGES entry:

    use heap memory for crypt in apr_password_validate, to reduce stack usage
    
    PR: 54572



git-svn-id: https://svn.apache.org/repos/asf/apr/apr-util/branches/1.5.x@1460279 13f79535-47bb-0310-9956-ffa450edef68