Project:Ruby/Ruby 1.8 deprecation

Ruby 1.8 is currently being deprecated and will be removed from tree (earliest possible: 16th April 2014)

= ruby 1.8 final mask (expires April 16th) = dev-lang/ruby:1.8 virtual/rubygems:ruby18 virtual/ruby-rdoc:ruby18 virtual/ruby-ssl:ruby18 virtual/ruby-threads:ruby18 app-misc/alexandria dev-ruby/fastercsv dev-ruby/oniguruma dev-ruby/rand dev-ruby/revolution dev-ruby/ruby-taglib dev-ruby/rubytorrent dev-ruby/sary-ruby dev-ruby/system_timer  (16 Mar 2014)
 * 2) Ruby 1.8 has no longer been supported upstream since July 2013 and
 * 3) has known security issues (bug #492282). Ruby packages in general
 * 4) are no longer compatible with ruby 1.8. Removal is tracked in bug
 * 5) 434064.
 * 6) This mask also includes all packages still depending in ruby 1.8.
 * 7) Removal in 30 days
 * 1) Removal in 30 days

Additional actions:
 * (done) Remove system_timer from dev-ruby/faraday (behind ruby18 USE flag)
 * (done, not needed) Remove fastercsv from dev-ruby/dbf and www-apps/redmine (behind ruby18 USE flag)
 * (done) Remove oniguruma from dev-ruby/textpow and dev-ruby/ultraviolet (behind ruby18 USE flag)
 * profiles/desc/ruby_targets.desc: Add (removed) to ruby18

= Masked packages = all other cleaned up.