Early draft of strict mode

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index c19f4a9a683a40b6c8cdefae14893008419c8481..1cf6c38937bff653bc8d3130967a48a7399984bc 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -196,7 +196,13 @@ function FormatMessage(message) {
       array_indexof_not_defined:    "Array.getIndexOf: Argument undefined",
       object_not_extensible:        "Can't add property %0, object is not extensible",
       illegal_access:               "Illegal access",
-      invalid_preparser_data:       "Invalid preparser data for function %0"
+      invalid_preparser_data:       "Invalid preparser data for function %0",
+      strict_mode_with:             "Strict mode code may not include a with statement",
+      strict_catch_variable:        "Catch variable may not be eval or arguments in strict mode",
+      strict_param_name:            "Parameter name eval or arguments is not allowed in strict mode",
+      strict_param_dupe:            "Strict mode function may not have duplicate parameter names",
+      strict_var_name:              "Variable name may not be eval or arguments in strict mode",
+      strict_function_name:         "Function name may not be eval or arguments in strict mode",
     };
   }
   var format = kMessages[message.type];