Merged in benoitsteiner/opencl (pull request PR-272)

Adding asynchandler to sycl queue as lack of it can cause undefined behaviour.

unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h

@@ -89,7 +89,13 @@ struct QueueInterface {
     }
   }))
   #else
-  m_queue(cl::sycl::queue(s))
+  m_queue(cl::sycl::queue(s, [&](cl::sycl::exception_list l) {
+    for (const auto& e : l) {
+        if (e) {
+           exception_caught_ = true;
+        }
+    }
+  }))
   #endif
   {}