remove some macgraphics references; some Amiga

Also closes #183

include/flag.h

@@ -293,11 +293,6 @@ struct instance_flags {
 #if defined(MICRO) || defined(WIN32)
     boolean rawio; /* whether can use rawio (IOCTL call) */
 #endif
-#ifdef MAC_GRAPHICS_ENV
-    boolean MACgraphics; /* use Macintosh extended character set, as
-                            as defined in the special font HackFont */
-    unsigned use_stone;  /* use the stone ppats */
-#endif
 #if defined(MSDOS) || defined(WIN32)
     boolean tile_view;
     boolean over_view;

include/optlist.h

@@ -334,11 +334,6 @@ static int optfn_##a(int, int, boolean, char *, char *);
                 Off, Yes, No, No, NoAlias, &flags.lit_corridor, Term_False)
     NHOPTB(lootabc, Advanced, 0, opt_in, set_in_game,
                 Off, Yes, No, No, NoAlias, &flags.lootabc, Term_False)
-#if defined(BACKWARD_COMPAT) && defined(MAC_GRAPHICS_ENV)
-    NHOPTC(Macgraphics, Advanced, 70, opt_in, set_in_config,
-                No, Yes, No, No, NoAlias,
-                "load MACGraphics display symbols into symset")
-#endif
     NHOPTB(mail, Advanced, 0, opt_out, set_in_game,
                 On, Yes, No, No, NoAlias, &flags.biff, Term_False)
     NHOPTC(map_mode, Advanced, 20, opt_in, set_gameview,