Update references to asm jars from 3.0 to 4.0_RC1 in Rakefile

Author: BanzaiMan

Rakefile

@@ -32,7 +32,7 @@ end
 desc "Generate sources, compile and add to jar file"
 task :gen do
   mkdir_p 'src_gen'
-  system 'apt -nocompile -cp lib/jruby.jar:build_lib/asm-3.0.jar:build_lib/asm-util-3.0.jar -factory org.jruby.anno.AnnotationBinder src/org/jruby/*.java'
+  system 'apt -nocompile -cp lib/jruby.jar:build_lib/asm-4.0_RC1.jar:build_lib/asm-util-4.0_RC1.jar -factory org.jruby.anno.AnnotationBinder src/org/jruby/*.java'
   system 'javac -cp lib/jruby.jar src_gen/*.java'
   system 'jar -uf lib/jruby.jar -C src_gen .'
 end