VIXL Release 1.1

Refer to the README.md and LICENCE files for details.
diff --git a/src/utils.h b/src/utils.h
index 400e6aa..4e0b367 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -79,7 +79,7 @@
 }
 
 inline uint64_t unsigned_bitextract_64(int msb, int lsb, uint64_t x) {
-  return (x >> lsb) & ((1 << (1 + msb - lsb)) - 1);
+  return (x >> lsb) & ((static_cast<uint64_t>(1) << (1 + msb - lsb)) - 1);
 }
 
 inline int32_t signed_bitextract_32(int msb, int lsb, int32_t x) {