FFI specific I/O routines
<init>()createIOModule(org.jruby.runtime.ThreadContext context, org.jruby.RubyModule FFI)native_read(org.jruby.runtime.ThreadContext context, org.jruby.runtime.builtin.IRubyObject self, org.jruby.runtime.builtin.IRubyObject src, org.jruby.runtime.builtin.IRubyObject dst, org.jruby.runtime.builtin.IRubyObject rbLength)