Fix many compiler warnings.

There should only be two changes in behavior:

arogue7/fight.c, arogue7/fight.c: a to-hit bonus is now correctly
applied to characters who are not monks instead of monks who are not
empty-handed.

urogue/fight.c: fixed an interaction with the "debug" macro that could
cause the wrong message to be displayed.

arogue5/main.c

@@ -50,9 +50,11 @@ int
 main(int argc, char *argv[], char *envp[])
 {
     register char *env;
+#ifndef SCOREFILE
     char *roguedir;
 
     roguedir = md_getroguedir();
+#endif
     md_init();
 
     /*