Log Message:
Update ruby21{-base} to 2.1.8 (Ruby 2.1.8).

Ruby 2.1.8 Released

Posted by usa on 16 Dec 2015

Ruby 2.1.8 has been released.

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

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

And, many bug fixes are also included. See ChangeLog for details.