Use the OpenBSD header for ICU on OpenBSD

public/common/unicode/ptypes.h

 /*
 ******************************************************************************
 *
 *   Copyright (C) 1997-2010, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
 *
 *  FILE NAME : ptypes.h
 *
@@ skipping 10 matching lines @@
 #define _PTYPES_H
 
 #include <sys/types.h>
 
 #if defined(__APPLE__)
 #   include "unicode/pmac.h"
 #elif defined(__linux__)
 #   include "unicode/plinux.h"
 #elif defined(__FreeBSD__)
 #   include "unicode/pfreebsd.h"
+#elif defined(__OpenBSD__)
+#   include "unicode/popenbsd.h"
 #else
 #   include "unicode/platform.h"
 #endif
 
 /*===========================================================================*/
 /* Generic data types                                                        */
 /*===========================================================================*/
 
 /* If your platform does not have the <inttypes.h> header, you may
    need to edit the typedefs below. */
@@ skipping 49 matching lines @@
 #endif
 
 #if ! U_HAVE_UINT64_T
     typedef unsigned long long uint64_t;
 /* else we may not have a 64-bit type */
 #endif
 
 #endif /* U_HAVE_INTTYPES_H */
 
 #endif /* _PTYPES_H */