Use 7z if exist
7z can compress with higher ratio than gzip/zip.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57060 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by naruse (Yui NARUSE) almost 9 years ago
Use 7z if exist
7z can compress with higher ratio than gzip/zip.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57060 b2dd03c8-39d4-4d8f-98ff-823fe69b080e