option help

I stated out by changing dat/opthelp to stop shouting the boolean
defaults: [TRUE] -> [True], [FALSE] -> [False].  I ended up doing
a partical reconcilliation between ?g (dynamic list of options)
and ?h (dat/opthelp).  There were several inapplicable options in
the dynamic list, so this changes option_help() to avoid those.

I barely glanced at the compound options so they may not sync up.

include/optlist.h

@@ -228,8 +228,10 @@ pfx_##a,
 #endif
     NHOPTB(implicit_uncursed, 0, opt_out, set_in_game, On, Yes, No, No,
                 NoAlias, &flags.implicit_uncursed)
+#if 0   /* obsolete - pre-OSX Mac */
     NHOPTB(large_font, 0, opt_in, set_in_config, Off, Yes, No, No, NoAlias,
                 &iflags.obsolete)
+#endif
     NHOPTB(legacy, 0, opt_out, set_in_config, On, Yes, No, No, NoAlias,
                 &flags.legacy)
     NHOPTB(lit_corridor, 0, opt_in, set_in_game, Off, Yes, No, No, NoAlias,