ruby18.rake (:configure): only run configure if it is newer than makefile
ruby18.rake (:configure): only run configure if it is newer than makefile

leonhooijer/rubyinstaller,leonhooijer/rubyinstaller,suvarnaraju/rubyinstaller,leonhooijer/rubyinstaller,jaym/rubyinstaller,vemmaverve/rubyinstaller,shirosaki/rubyinstaller,dreamauya/rubyinstaller,jahanzaibbahadur/rubyinstaller,auyaauya/rubyinstaller,haonaturel/rubyinstaller,shirosaki/rubyinstaller,oneclick/rubyinstaller,jahanzaibbahadur/rubyinstaller,modulexcite/rubyinstaller,suvarnaraju/rubyinstaller,zorosteven/rubyinstaller,haonaturel/rubyinstaller,auyaauya/rubyinstaller,shirosaki/rubyinstaller,haonaturel/rubyinstaller,vemmaverve/rubyinstaller,modulexcite/rubyinstaller,vemmaverve/rubyinstaller,oneclick/rubyinstaller,jaym/rubyinstaller,zorosteven/rubyinstaller,auyaauya/rubyinstaller,suvarnaraju/rubyinstaller,Rugbyman21/rubyinstaller,jahanzaibbahadur/rubyinstaller,jaym/rubyinstaller,oneclick/rubyinstaller,dreamauya/rubyinstaller,Rugbyman21/rubyinstaller,dreamauya/rubyinstaller,Rugbyman21/rubyinstaller,modulexcite/rubyinstaller,zorosteven/rubyinstaller