Merge from vendor branch TNF:

Merge from vendor branch TNF:
Importing ruby19-base 1.9.2pl0.

This package is Ruby 1.9 based release.

And this new release has several features and some incompatibility.
Please refer changes from Ruby 1.8.7:

	http://svn.ruby-lang.org/repos/ruby/tags/v1_9_1_0/NEWS
	http://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_0/NEWS

*Note* NetBSD isn't "supported" but "perhaps" platform by Ruby.  Please
refer about it "Supported Platform" in
http://www.ruby-lang.org/en/news/2010/08/18/ruby-1-9-2-is-released/.