Fix config.h includes

We need stdlib.h and string.h in priv.h for free() and memset().

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>

src/external/bcrypt_pbkdf.c

@@ -19,6 +19,8 @@
 
 #ifndef HAVE_BCRYPT_PBKDF
 
+#include "config.h"
+
 #include "libssh/priv.h"
 #include "libssh/wrapper.h"
 #include <stdlib.h>

src/external/fe25519.c

@@ -4,6 +4,8 @@
  * Copied from supercop-20130419/crypto_sign/ed25519/ref/fe25519.c
  */
 
+#include "config.h"
+
 #define WINDOWSIZE 1 /* Should be 1,2, or 4 */
 #define WINDOWMASK ((1<<WINDOWSIZE)-1)
 

src/external/ge25519.c

@@ -6,6 +6,8 @@
  * Copied from supercop-20130419/crypto_sign/ed25519/ref/ge25519.c
  */
 
+#include "config.h"
+
 #include "libssh/fe25519.h"
 #include "libssh/sc25519.h"
 #include "libssh/ge25519.h"

src/external/sc25519.c

@@ -4,6 +4,8 @@
  * Copied from supercop-20130419/crypto_sign/ed25519/ref/sc25519.c
  */
 
+#include "config.h"
+
 #include "libssh/priv.h"
 #include "libssh/sc25519.h"