Log Message:
Update ruby-racc package to 1.4.6.

* Add LICENSE.
* Ajust new ruby package's framework.
* Add CONFLICTS since it will install the same name commands both
  ruby18 and ruby19 based packages.
* Add patch to suport both ruby18 and ruby19.

=== 1.4.6

* Bugfixes

  * bin/racc -g option renamed to -t
  * racc/compiler.rb is removed
  * '|' is allowed with meta rules
  * Ruby 1.8.7 compatibility fixes
  * Ruby 1.9 compatibility fixes