compatibility fix for ruby 1.8.6

Rakefile

@@ -27,6 +27,8 @@ end
 Rake::ExtensionTask.new("v8", $hoe.spec) do |ext|
   ext.lib_dir = "lib/v8"
   ext.source_pattern = "*.{cpp,h}"
+  ext.config_options << "--with-v8-include=#{ENV['V8_HOME']}/include"
+  ext.config_options << "--with-v8-lib=#{ENV['V8_HOME']}"
 end
 
 require 'newgem/tasks'

ext/v8/callbacks.cpp

@@ -28,8 +28,8 @@ namespace {
     return converted;
   }
 
-  Local<Value> Racer_Access_Ruby_Property(VALUE object, VALUE name) {
-    VALUE method = rb_obj_method(object, name);
+  Local<Value> Racer_Access_Ruby_Property(VALUE object, VALUE name) { 
+    VALUE method = rb_funcall(object, rb_intern("method"), 1, name);
     if (FIX2INT(rb_funcall(method, rb_intern("arity"), 0)) == 0) {
       return Racer_Call_Ruby_Method(object, name, Array::New(0));      
     } else {