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

srtp/crypto/hash/sha1.c

 /*
  * sha1.c
  *
  * an implementation of the Secure Hash Algorithm v.1 (SHA-1),
  * specified in FIPS 180-1
  *
  * David A. McGrew
  * Cisco Systems, Inc.
  */
 
@@ skipping 26 matching lines @@
  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (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 "sha1.h"
 
 debug_module_t mod_sha1 = {
   0,                 /* debugging is off by default */
   "sha-1"            /* printable module name       */
 };
 
 /* SN == Rotate left N bits */
 #define S1(X)  ((X << 1)  | (X >> 31))
@@ skipping 339 matching lines @@
   output[4] = be32_to_cpu(ctx->H[4]);
 
   /* indicate that message buffer in context is empty */
   ctx->octets_in_buffer = 0;
 
   return;
 }