Upgrade unbound library

These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).

external/unbound/util/storage/lookup3.c

@@ -820,7 +820,7 @@ uint32_t hashbig( const void *key, size_t length, uint32_t initval)
 #ifdef SELF_TEST
 
 /* used for timings */
-void driver1()
+void driver1(void)
 {
   uint8_t buf[256];
   uint32_t i;
@@ -842,7 +842,7 @@ void driver1()
 #define HASHLEN   1
 #define MAXPAIR 60
 #define MAXLEN  70
-void driver2()
+void driver2(void)
 {
   uint8_t qa[MAXLEN+1], qb[MAXLEN+2], *a = &qa[0], *b = &qb[1];
   uint32_t c[HASHSTATE], d[HASHSTATE], i=0, j=0, k, l, m=0, z;
@@ -912,7 +912,7 @@ void driver2()
 }
 
 /* Check for reading beyond the end of the buffer and alignment problems */
-void driver3()
+void driver3(void)
 {
   uint8_t buf[MAXLEN+20], *b;
   uint32_t len;
@@ -1003,7 +1003,7 @@ void driver3()
 }
 
 /* check for problems with nulls */
- void driver4()
+ void driver4(void)
 {
   uint8_t buf[1];
   uint32_t h,i,state[HASHSTATE];
@@ -1020,7 +1020,7 @@ void driver3()
 }
 
 
-int main()
+int main(void)
 {
   driver1();   /* test that the key is hashed: used for timings */
   driver2();   /* test that whole key is hashed thoroughly */