test_framework.rb: show mkmf.log on failure
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36591 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_framework.rb: show mkmf.log on failure
mkmf.log on failure.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36591 b2dd03c8-39d4-4d8f-98ff-823fe69b080e