* ext/-test-/**/extconf.rb: bring up extension libraries which
have same name as the parent directory to reduce feature names.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
When you change this to true, you may need to add more tests.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e