-Nearly compiles doscalls

-Added  an mixing header to have ntddk and os2 included without conflicts

svn path=/trunk/; revision=3304

os2/include/ros2.h

@@ -0,0 +1,52 @@
+/* $     $
+*/
+/*
+ *
+ * COPYRIGHT:        See COPYING in the top level directory
+ * PROJECT:          ReactOS OS/2 sub system
+ * FILE:             dll/doscalls.c
+ * PURPOSE:          supportheader for Kernelservices.
+ *						Use this file if your dll or application
+ *						is going to use both, the os2 base services
+ *						as well as the native API of NTDLL.DLL
+ * PROGRAMMER:       Robert K. nonvolatil@yahoo.de
+ * REVISION HISTORY:
+ *    1-08-2002  Created
+ */
+
+/*   How to use:
+	History got us another time. If you want to write a module
+	that uses either native-api or os2-services...no problem.
+	But if you want to use both of them you run into type conflicts.
+	BOOL is not very surprising. But there are many other types 
+	whose names are equal. This results from the fact that NT
+	should originally become OS/2 3.0. 
+	So your solution lies in including this file instead of os2.h
+	and ntddk.h. What this file here does is, it puts the os2-types+
+	functions into the namespace OS2 while the nt-types+functions are
+	put into the namespace NT. The still conflicting #defines are handled
+	like this:  If ntddk.h defintes a symbol FOO and os2.h does the same,
+	this file here undefines the ntddk.h-one and renames it to NT_FOO.
+	This is only done for conflicting symbols. Of course, this ist a 
+	source for errors. But is there a better solution than renaming 
+	all of the symbols?
+*/
+
+namespace NT
+{
+#include <ddk/ntddk.h>
+}
+
+
+/* rename all the symbols */
+#define	NT_FILE_CREATE		FILE_CREATE
+#undef	FILE_CREATE
+#define	NT_CREATE_SUSPENDED		CREATE_SUSPENDED
+#undef	CREATE_SUSPENDED
+
+namespace OS2
+{
+#include "os2.h"
+}
+
+using namespace OS2;