Prototype fixes, and remove -ansi and -pedantic from Makefile

diff -ur sheerdns-old/hash.c sheerdns/hash.c
--- sheerdns-old/hash.c	2003-04-12 15:04:59.000000000 +0700
+++ sheerdns/hash.c	2014-07-02 02:20:22.099308751 +0700
@@ -4,6 +4,8 @@
 #include <assert.h>
 #include <string.h>
 #include <time.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include "hash.h"
 #include "dir.h"
 
@@ -25,7 +27,7 @@
 	unsigned char *s;
 	s = (unsigned char *) hex_hash ((unsigned char *) argv[1]);
 	snprintf (buf, sizeof (buf), SHEERDNS_DIR "/%s/%s", s, argv[1]);
-	mkdir (buf);
+	mkdir (buf, 0700);
 	l = strlen ((char *) s);
 	write (1, s, l);
 	write (1, "\n", 1); }
diff -ur sheerdns-old/Makefile sheerdns/Makefile
--- sheerdns-old/Makefile	2003-04-12 15:04:41.000000000 +0700
+++ sheerdns/Makefile	2014-07-02 02:29:43.872601090 +0700
@@ -1,5 +1,5 @@
 
-CFLAGS=-Wall -g -O0 -ansi -pedantic
+CFLAGS=-Os -Wall
 
 SRCS=$(wildcard *.c)
 
diff -ur sheerdns-old/strutil.h sheerdns/strutil.h
--- sheerdns-old/strutil.h	2003-04-13 21:33:06.000000000 +0700
+++ sheerdns/strutil.h	2014-07-02 02:26:58.902613382 +0700
@@ -1,6 +1,7 @@
 
 void string_purify (unsigned char *s);
 void string_chomp (unsigned char *s);
+void string_wash (unsigned char *p);
 
 char **string_split (const char *s, char c, size_t max, int multi);
 int string_present (char *s, char **a);