header fixes

[Ove Kaaven]

These fixes seem to be necessary for successful compilation when
include/wine/obj_base.h has been eliminated.

Log:
Ove Kaaven <ovek at transgaming.com>
Where ICOM macros are needed, include objbase.h.

Index: include/dinput.h
===================================================================
RCS file: /home/wine/wine/include/dinput.h,v
retrieving revision 1.30
diff -u -r1.30 dinput.h
--- include/dinput.h	14 Jun 2002 00:39:44 -0000	1.30
+++ include/dinput.h	20 Dec 2002 11:33:33 -0000
@@ -20,7 +20,7 @@
 #define __WINE_DINPUT_H
 
 #include "windef.h" /* for MAX_PATH */
-#include "unknwn.h"
+#include "objbase.h"
 
 #ifndef DIRECTINPUT_VERSION
 #define DIRECTINPUT_VERSION	0x0800
Index: include/oaidl.h
===================================================================
RCS file: /home/wine/wine/include/oaidl.h,v
retrieving revision 1.7
diff -u -r1.7 oaidl.h
--- include/oaidl.h	5 Dec 2002 20:33:07 -0000	1.7
+++ include/oaidl.h	20 Dec 2002 11:33:34 -0000
@@ -32,9 +32,7 @@
 #error DO NOT INCLUDE DIRECTLY
 #endif
 
-#define __WINE_INCLUDE_OBJIDL
-#include "objidl.h"
-#undef __WINE_INCLUDE_OBJIDL
+#include "objbase.h"
 /* the following depend only on obj_base.h */
 #include "wine/obj_oleaut.h"
 #include "wine/obj_errorinfo.h"