Export rb_f_eval

Author: dbussink

include/ruby/intern.h

@@ -942,6 +942,7 @@ VALUE rb_time_succ(VALUE);
 int rb_frame_method_id_and_class(ID *idp, VALUE *klassp);
 VALUE rb_make_backtrace(void);
 VALUE rb_make_exception(int, VALUE*);
+VALUE rb_f_eval(int argc, VALUE *argv, VALUE self);
 
 /* deprecated */
 DEPRECATED(void rb_frame_pop(void));