Travis-CI config: 1.8.7 should work as a baseline
Travis-CI: adding ruby 1.9.2 and 1.9.3 to test-targets
Travis-CI: adding jruby testing to the mix
Specs: yaml serialization changes in ruby 1.9, so splitting spec
Specs: jruby YAML serialization is also slightly different
Travis-CI: jruby backtraces are somewhat special
Merge remote-tracking branch 'rud/chore/travis-ci-support'

* rud/chore/travis-ci-support:
  Travis-CI: jruby backtraces are somewhat special
  Specs: jruby YAML serialization is also slightly different
  Specs: yaml serialization changes in ruby 1.9, so splitting spec
  Travis-CI: adding jruby testing to the mix
  Travis-CI: adding ruby 1.9.2 and 1.9.3 to test-targets
  Travis-CI config: 1.8.7 should work as a baseline

Conflicts:
	spec/squash_ruby_spec.rb