Log Message:
Update ruby22{-base} to 2.2.4 (Ruby 2.2.4).

Ruby 2.2.4 Released

Posted by nagachika on 16 Dec 2015

Ruby 2.2.4 has been released.

This release includes a security fix for Fiddle extension. Please view the
topic below for more details.

    * CVE-2015-7551: Unsafe tainted string usage in Fiddle and DL

There are also some bugfixes. See ChangeLog for details.