Update JSNewResolveOp's comment to talk about the new JSRESOLVE_ flags.

js/src/jspubtd.h

@@ -207,6 +207,9 @@ typedef JSBool
  *
  *  JSRESOLVE_QUALIFIED   a qualified property id: obj.id or obj[id], not id
  *  JSRESOLVE_ASSIGNING   obj[id] is on the left-hand side of an assignment
+ *  JSRESOLVE_DETECTING   'if (o.p)...' or similar detection opcode sequence
+ *  JSRESOLVE_DECLARING   var, const, or function prolog declaration opcode
+ *  JSRESOLVE_CLASSNAME   class name used when constructing
  *
  * The *objp out parameter, on success, should be null to indicate that id
  * was not resolved; and non-null, referring to obj or one of its prototypes,