Set system time and update boot time and relative timers.

reactos/ntoskrnl/include/internal

diff -u -r1.67 -r1.68
--- ke.h	27 Nov 2004 16:32:10 -0000	1.67
+++ ke.h	28 Nov 2004 12:58:32 -0000	1.68
@@ -184,6 +184,9 @@

 STDCALL
 KeFlushCurrentTb(VOID);
 

+VOID
+KiSetSystemTime(PLARGE_INTEGER NewSystemTime);
+

 #endif /* not __ASM__ */
 
 #define MAXIMUM_PROCESSORS      32