make: unifdef for other OSes (undefined)

*** 24,55 ****
   */
  
  #ifndef _AVO_INTL_H
  #define _AVO_INTL_H
  
- #if defined(SUN4_x) || defined(HP_UX)
- #include <avo/widefake.h>
- #endif
  
  /*
   * For catgets
   */
  #include <nl_types.h>
  
- #ifdef HP_UX
- #ifdef __cplusplus
- #ifndef _STDLIB_INCLUDED
- #include <stdlib.h>             /* for wchar_t definition and HP-UX - */
- #endif                          /* wide character function prototypes. */
- extern "C" {
- char *gettext(char *msg);
- char *dgettext(const char *, const char *);
- char *bindtextdomain(const char *, const char *);
- char *textdomain(char *);
- }
- #endif /* __cplusplus */
- #endif
  
  /*
   * NOCATGETS is a dummy macro that returns it argument.
   * It is used to identify strings that we consciously do not
   * want to apply catgets() to.  We have tools that check the
--- 24,39 ----