Don't include alpha.h.

(WCHAR_TYPE, WCHAR_TYPE_SIZE): Use short unsigned int.

From-SVN: r11286

gcc/config/alpha/osf12.h

 /* Definitions of target machine for GNU compiler, for DEC Alpha.
-   Copyright (C) 1992, 1993, 1995 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1993, 1995, 1996 Free Software Foundation, Inc.
    Contributed by Richard Kenner (kenner@nyu.edu)
 
 This file is part of GNU CC.
@@ -19,9 +19,6 @@ along with GNU CC; see the file COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
-
-#include "alpha/alpha.h"
-
 /* In OSF 1.2, there is a linker bug that prevents use of -O3 to
    the linker.  */
 
@@ -29,3 +26,8 @@ Boston, MA 02111-1307, USA.  */
 #define LINK_SPEC  \
   "-G 8 -O1 %{static:-non_shared} %{rpath*} \
    %{!static:%{shared:-shared} %{!shared:-call_shared}} %{taso}"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "short unsigned int"
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 16