* .travis.yml (before_script): check if cached config works.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42611 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-08-19

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42612 b2dd03c8-39d4-4d8f-98ff-823fe69b080e