Update libsrtp to upstream 1.5.0

srtp/crypto/rng/prng.c

 /*
  * prng.c 
  *
  * pseudorandom source
  *
  * David A. McGrew
  * Cisco Systems, Inc.
  */
 /*
  *      
@@ skipping 25 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
 #include "prng.h"
 
 /* single, global prng structure */
 
 x917_prng_t x917_prng;
 
 err_status_t
 x917_prng_init(rand_source_func_t random_source) {
   uint8_t tmp_key[16];
   err_status_t status;
@@ skipping 115 matching lines @@
   }
   
   return err_status_ok;
 }
 
 err_status_t
 x917_prng_deinit(void) {
   
   return err_status_ok;  
 }