fix many tests with preloading

preloading, something akin to builtin, loads some very small predefined (macro) methods for the tests to work (ie call)

test/vool/class_send/helper.rb

@@ -7,7 +7,7 @@ module Vool
     include VoolCompile
 
     def setup
-      @compiler = compile_main( send_method )
+      @compiler = compile_main( send_method , "Object.get" )
       @ins = @compiler.mom_instructions.next
     end
 

test/vool/class_send/test_class_def.rb

@@ -17,8 +17,9 @@ module Vool
     end
 
     def setup
-      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(class_main)
-      @ins = ret.compilers.first.mom_instructions.next
+      source = "class Integer;def +(other);X.int_operator(:+);end;end;" + class_main
+      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(source)
+      @ins = ret.compilers.find{|c|c.callable.name==:main}.mom_instructions.next
     end
 
     def test_any
@@ -27,7 +28,7 @@ module Vool
 
     def test_no_arg
       assert_equal Mom::ArgumentTransfer,  @ins.next(1).class
-      assert_equal 1,  @ins.next(1).arguments.length
+      assert_equal 0,  @ins.next(1).arguments.length
     end
     def test_call_two
       assert_equal SimpleCall,  @ins.next(2).class