Implement RtlClearBits() and RtlSetBits() routines

sdk/xtdk/rtlfuncs.h

@@ -58,6 +58,12 @@ VOID
 RtlClearBit(IN PRTL_BITMAP BitMap,
             IN ULONG_PTR Bit);
 
+XTAPI
+VOID
+RtlClearBits(IN PRTL_BITMAP BitMap,
+             IN ULONG StartingIndex,
+             IN ULONG Length);
+
 XTAPI
 BOOLEAN
 RtlCompareGuids(IN PGUID Guid1,
@@ -185,6 +191,12 @@ VOID
 RtlSetBit(IN PRTL_BITMAP BitMap,
           IN ULONG_PTR Bit);
 
+XTAPI
+VOID
+RtlSetBits(IN PRTL_BITMAP BitMap,
+           IN ULONG StartingIndex,
+           IN ULONG Length);
+
 XTAPI
 VOID
 RtlSetMemory(OUT PVOID Destination,