Add MAX_STATUENAME_RANK sysconf setting

MAX_STATUENAME_RANK tells how many score file entries to use
for random statue names.

src/files.c

@@ -2209,6 +2209,13 @@ int		src;
 		return 0;
 	    }
 	    sysopt.pointsmin = n;
+	} else if (src == SET_IN_SYS && match_varname(buf, "MAX_STATUENAME_RANK", 10)) {
+	    n = atoi(bufp);
+	    if (n < 1) {
+		raw_printf("Illegal value in MAX_STATUENAME_RANK (minimum is 1).");
+		return 0;
+	    }
+	    sysopt.tt_oname_maxrank = n;
 # ifdef PANICTRACE
 	} else if (src == SET_IN_SYS &&
 		match_varname(buf, "PANICTRACE_LIBC", 15)) {

src/sys.c

@@ -29,6 +29,7 @@ sys_early_init(){
 	sysopt.entrymax = ENTRYMAX;
 	sysopt.pointsmin = POINTSMIN;
 	sysopt.pers_is_uid = PERS_IS_UID;
+	sysopt.tt_oname_maxrank = 10;
 
 		/* sanity checks */
 	if(PERSMAX<1) sysopt.persmax = 1;

src/topten.c

@@ -975,7 +975,7 @@ struct obj *otmp;
 	}
 
 	tt = &tt_buf;
-	rank = rnd(10);
+	rank = rnd(sysopt.tt_oname_maxrank);
 pickentry:
 	for(i = rank; i; i--) {
 	    readentry(rfile, tt);