fix CPPOUTFILE
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36087 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
fix CPPOUTFILE
specified file to tell if -o option works. [ruby-dev:45742]
[Bug#6591]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36087 b2dd03c8-39d4-4d8f-98ff-823fe69b080e