JDBCAuthProvider: add support for bcrypt and more

Description

https://github.com/igniterealtime/Openfire/pull/390

1) BCrypt support for passwords

2) "Chained" password hashing (still defaults to simply "plain")

3) Submission of hashes in lieu of passwords (defaults to false)

Environment

None
Fixed
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Assignee

Dave Cridland

Reporter

Daryl Herzmann