-jadmin: new jabberd 2 release (bugfix only)

I've packaged 2.1.2 release of jabberd2.1
There's nothing new with this release. Only compilation fixes.
So, if you have 2.1.1 running there's no reason to upgrade.

Get it as usual at:

http://ftp.xiaoka.com/jabberd2/releases/jabberd-2.1.2.tar.gz

http://ftp.xiaoka.com/jabberd2/releases/jabberd-2.1.2.tar.bz2

Release Note
* fixed MD5_CTX compilation errors