Log Message:
Update www/ruby-compass to 0.10.5.

* Use lang/ruby/gem.mk instead of misc/rubygems/rubygem.mk.
* Currently, MASTER_SITES points home page, sigh.
* Add LICENSE.
* Remove default value of GEM_BUILD.
* Update dependency according to gemspec.
* Add CONFLICTS since it will install the same name commands both
  ruby18 and ruby19 based packages.

Changes from 0.8.17 are too many, please refer
http://compass-style.org/docs/CHANGELOG/ for detail.