additions.
Add some cross refernces between dbmmanage and htdbm.
Update man page for htdbm and htpasswd.
Add bcrypt info to misc/password_encryptions.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1420686 13f79535-47bb-0310-9956-ffa450edef68