Conditional libffi build
Conditional libffi build

Sample:

rake ruby19 CHECKOUT=1 TRUNK=1 FFI=1

builds latest 1.9 trunk and libffi

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