Builtin is no more, final conversions done

All preloading where it needs to be
(some)tests for the preload
split compiler test
remembered binary tests (usually just run on travis)

test/ruby/test_basic_values.rb

@@ -99,7 +99,7 @@ module Ruby
       assert_equal "'string'" , compile_const( "'string'")
     end
     def test_sym
-      assert_equal "'symbol'" , compile_const( ":symbol")
+      assert_equal ":symbol" , compile_const( ":symbol")
     end
     def test_nil
       assert_equal "nil" , compile_const( "nil")