Land https://codereview.chromium.org/889083003/ to update libsrtp to upstream 1.5.0

srtp/crypto/test/rand_gen.c

 /*
  * rand_gen.c
  *
  * a random source (random number generator)
  *
  * 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 <stdio.h>           /* for printf() */
 #include <unistd.h>          /* for getopt() */
 #include "crypto_kernel.h"
 
 /*
  * MAX_PRINT_STRING_LEN is defined in datatypes.h, and is the length
  * of the largest hexadecimal string that can be generated by the
  * function octet_string_hex_string().
  */
 
@@ skipping 75 matching lines @@
 
   status = crypto_kernel_shutdown();
   if (status) {
     printf("error: crypto_kernel shutdown failed\n");
     exit(1);
   }
   
   return 0;
 }