Replace JS_Enumerate with manual enumeration, to avoid its memory allocations.

Use LookupProperty to avoid having to check for getters.
Add a quicker method of rooting many script values.

This was SVN commit r7579.

source/scriptinterface/ScriptInterface.h

@@ -29,6 +29,8 @@
 #include "ScriptTypes.h"
 #include "ScriptVal.h"
 
+class AutoGCRooter;
+
 namespace boost { class rand48; }
 
 // Set the maximum number of function arguments that can be handled
@@ -37,7 +39,6 @@ namespace boost { class rand48; }
 #define SCRIPT_INTERFACE_MAX_ARGS 6
 
 struct ScriptInterface_impl;
-class ScriptClass;
 class ScriptInterface
 {
 public:
@@ -181,6 +182,8 @@ public:
 	bool AddRoot(void* ptr, const char* name);
 	bool RemoveRoot(void* ptr);
 
+	AutoGCRooter* ReplaceAutoGCRooter(AutoGCRooter* rooter);
+
 	/**
 	 * Dump some memory heap debugging information to stderr.
 	 */