capi/spec_helper.rb: suppress logo
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59109 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
capi/spec_helper.rb: suppress logo
suppress logo of nmake.exe to stderr. we want to show compiler
warnings only.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59109 b2dd03c8-39d4-4d8f-98ff-823fe69b080e