Fix signature of hdb_generate_key_set_password()

The change to the signature of hdb_generate_key_set_password() in
Heimdal 7.1 broke API/ABI compatibility with previous releases.  We
fix this by renaming it hdb_generate_key_set_password_with_ks_tuple()
and creating a new hdb_generate_key_set_password() which calls our
new function with zeroes for the added arguments.

Issue #246      https://github.com/heimdal/heimdal/issues/246

lib/hdb/keys.c

@@ -772,11 +772,12 @@ hdb_generate_key_set(krb5_context context, krb5_principal principal,
 
 
 krb5_error_code
-hdb_generate_key_set_password(krb5_context context,
-			      krb5_principal principal,
-			      const char *password,
-			      krb5_key_salt_tuple *ks_tuple, int n_ks_tuple,
-			      Key **keys, size_t *num_keys)
+hdb_generate_key_set_password_with_ks_tuple(krb5_context context,
+					    krb5_principal principal,
+					    const char *password,
+					    krb5_key_salt_tuple *ks_tuple,
+					    int n_ks_tuple,
+					    Key **keys, size_t *num_keys)
 {
     krb5_error_code ret;
     size_t i;
@@ -809,3 +810,16 @@ hdb_generate_key_set_password(krb5_context context,
     }
     return ret;
 }
+
+
+krb5_error_code
+hdb_generate_key_set_password(krb5_context context,
+			      krb5_principal principal,
+			      const char *password,
+			      Key **keys, size_t *num_keys)
+{
+
+    return hdb_generate_key_set_password_with_ks_tuple(context, principal,
+						       password, NULL, 0,
+						       keys, num_keys);
+}