get rid of strcat
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
get rid of strcat
known length instead of strcat.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e