Log Message:
Update misc/ruby-columnize to 0.3.1.

* Use lang/ruby/gem.mk instead of misc/rubygems/rubygem.mk.
* Add LICENSE.
* Remove default value of GEM_BUILD.

0.3.1  (01-07-26)

- Correct for Ruby 1.9 (Mark Mosely)

- add optional lineprefix parameter

0.3.0  (01-10-09) - Sam Woodward Release

- Fix bad bug in arranging horizontally

0.2.1 (12-31-08)

- Add ability to run columns horizontally

0.2

- Minor - get rid of hacky $0 test