Merge r1465116 from trunk:

htpasswd: Add -v option to verify a password

htpasswd and htdbm could use some more refactoring...

Submitted by: sf
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1477651 13f79535-47bb-0310-9956-ffa450edef68