Changed SystemHandleList into SystemHandleInformation
Unknown18 is now SystemPageFileInformation
Some consistency (added numbers to the definitions).

diff --git a/include/winternl.h b/include/winternl.h
index ccc5281..27dd7a3 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -586,17 +586,17 @@
     SystemProcessorPerformanceInformation = 8,
     Unknown9,
     Unknown10,
-    SystemDriverInformation,
+    SystemDriverInformation = 11,
     Unknown12,
     Unknown13,
     Unknown14,
     Unknown15,
-    SystemHandleList,
+    SystemHandleInformation = 16,
     Unknown17,
-    Unknown18,
+    SystemPageFileInformation = 18,
     Unknown19,
     Unknown20,
-    SystemCacheInformation,
+    SystemCacheInformation = 21,
     Unknown22,
     SystemInterruptInformation = 23,
     SystemDpcBehaviourInformation = 24,