cmdcount_t

Add a type to force g.{command_count,last_command_count,multi} to have the
same type (because cmd.c: g.multi = g.command_count;) and some resulting
cleanup.

src/cmd.c

@@ -214,7 +214,7 @@ reset_occupations(void)
  * function times out by its own means.
  */
 void
-set_occupation(int (*fn)(void), const char *txt, int xtime)
+set_occupation(int (*fn)(void), const char *txt, cmdcount_t xtime)
 {
     if (xtime) {
         g.occupation = timed_occupation;