**jruby-openssl** moved into it's own repository (history preserved)

... as proposed, promised and agreed here's an attempt to re-invent the **jruby-openssl** repository : 

https://github.com/kares/jruby-openssl

it's an imperfect but very usable attempt to regain "old" history from https://github.com/jruby/jruby-ossl and apply the relevant (filter-branch) pieces from jruby's *ext/openssl* on top of them. this should prove valuable as I myself was quite missing the old pieces while doing some of the refactorings/fixes.

I would vote for NOT having a third openssl repo under jruby :) ... there's been jruby-openssl and jruby-ossl previously ... https://github.com/jruby/jruby-openssl has been replaced with an empty repo, so there really should be no harm deleting that one and adding a new one under **jruby/jruby-openssl** ... maybe :) ?!

ps1 new tags are not yet migrated ... will do when it's agreed that this is fine

ps2 feel free to ignore the PR itself ... I just wanted to have something to start a discussion (if needed)

// cc @mkristian @enebo