- Export JSSLOT_ITER_* from jsiter.cpp to jsiter.h, for jstracer.cpp to use.

- Fix OBJ_GET_SLOT to be STOBJ_GET_SLOT in jsiter.cpp, no thread safety here (bug on file).
- Move JSNativeEnumerator from jsobj.cpp to jsobj.h for jstracer.cpp as well.
- Rename JOF_2BYTE JOF_UINT8 for consistency, and actually decompile it.
- Trace JSOP_FORVAR (can't do anything in JSOP_ITER, it comes before the loop).
- Shortened some guardMyLongSummerVacationWithinBounds names ;-).
- Removed/refactored to avoid dslots_ins obligation on all callers.

js/src/jsopcode.cpp

@@ -410,6 +410,10 @@ js_Disassemble1(JSContext *cx, JSScript *script, jsbytecode *pc,
         i = (jsint)GET_UINT24(pc);
         goto print_int;
 
+      case JOF_UINT8:
+        i = pc[1];
+        goto print_int;
+
       case JOF_INT8:
         i = GET_INT8(pc);
         goto print_int;