ruby: Update to 2.2.2

Includes among other things: CVE-2015-1855: Ruby OpenSSL Hostname Verification

for more info see:
http://svn.ruby-lang.org/repos/ruby/tags/v2_2_2/ChangeLog



also, fixed runtime error.
only include "enable-wide-getaddrinfo" if IVP6 is enabled in disto feature
otherwise 'gem install rails' throws an error for the missing symbol 'getipnodebyname'.

Signed-off-by: Armin Kuster <akuster808@gmail.com>