Added a few more prototypes to the headers.

diff --git a/include/winternl.h b/include/winternl.h
index 503b857..ebd0f60 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -1223,8 +1223,11 @@
 void      WINAPI LdrShutdownProcess(void);
 void      WINAPI LdrShutdownThread(void);
 NTSTATUS  WINAPI NtAccessCheck(PSECURITY_DESCRIPTOR,HANDLE,ACCESS_MASK,PGENERIC_MAPPING,PPRIVILEGE_SET,PULONG,PULONG,PBOOLEAN);
+NTSTATUS  WINAPI NtAdjustGroupsToken(HANDLE,BOOLEAN,PTOKEN_GROUPS,ULONG,PTOKEN_GROUPS,PULONG);
 NTSTATUS  WINAPI NtAdjustPrivilegesToken(HANDLE,BOOLEAN,PTOKEN_PRIVILEGES,DWORD,PTOKEN_PRIVILEGES,PDWORD);
+NTSTATUS  WINAPI NtAlertThread(HANDLE ThreadHandle);
 NTSTATUS  WINAPI NtAllocateVirtualMemory(HANDLE,PVOID*,PVOID,ULONG*,ULONG,ULONG);
+NTSTATUS  WINAPI NtCancelIoFile(HANDLE,PIO_STATUS_BLOCK);
 NTSTATUS  WINAPI NtCancelTimer(HANDLE, BOOLEAN*);
 NTSTATUS  WINAPI NtClearEvent(HANDLE);
 NTSTATUS  WINAPI NtClose(HANDLE);
@@ -1237,6 +1240,7 @@
 NTSTATUS  WINAPI NtCreateSemaphore(PHANDLE,ACCESS_MASK,const OBJECT_ATTRIBUTES*,ULONG,ULONG);
 NTSTATUS  WINAPI NtCreateTimer(HANDLE*, ACCESS_MASK, const OBJECT_ATTRIBUTES*, TIMER_TYPE);
 NTSTATUS  WINAPI NtDelayExecution(BOOLEAN,const LARGE_INTEGER*);
+NTSTATUS  WINAPI NtDeleteFile(POBJECT_ATTRIBUTES);
 NTSTATUS  WINAPI NtDeleteKey(HKEY);
 NTSTATUS  WINAPI NtDeleteValueKey(HKEY,const UNICODE_STRING *);
 NTSTATUS  WINAPI NtDeviceIoControlFile(HANDLE,HANDLE,PIO_APC_ROUTINE,PVOID,PIO_STATUS_BLOCK,ULONG,PVOID,ULONG,PVOID,ULONG);