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
* test/mkmf/base.rb (TestMkmf::MKMFLOG): show mkmf.log at failures.
* test/mkmf/base.rb (TestMkmf#teardown): close log file for each tests.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30159 b2dd03c8-39d4-4d8f-98ff-823fe69b080e