Implement RtlCompareGuids() kernel routine

sdk/xtdk/rtlfuncs.h

@@ -48,6 +48,11 @@ RtlRemoveEntryList(IN PLIST_ENTRY Entry);
 
 
 /* Runtime Library routines forward references */
+XTAPI
+BOOLEAN
+RtlCompareGuids(IN PGUID Guid1,
+                IN PGUID Guid2);
+
 XTAPI
 SIZE_T
 RtlCompareMemory(IN PCVOID LeftBuffer,