Comment 15 for bug 1468422

Code pushed to resolve #2 above.

WRT Perl code, #3 above is also resolved. New code implements the standalone password update API, the password reset API, and SIP password verification.

To share code (and for various other reasons), I migrated the user update code from open-ils.storage to open-ils.cstore. Testing looks good so far, but we'll want to do a good bit of user update testing while testing this branch.