Test both 1.8 and 1.9 mode in jruby and exclude mysql2 test on jruby
Test both 1.8 and 1.9 mode in jruby and exclude mysql2 test on jruby

jarredholman/sequel-rails,amaniak/sequel-rails,mrbrdo/sequel-rails,zBMNForks/sequel-rails,TalentBox/sequel-rails,TalentBox/sequel-rails,amaniak/sequel-rails,zBMNForks/sequel-rails,jarredholman/sequel-rails