cl_loader_layers update (#211)

* Added `CL_LAYER_NAME` info query for layers.

* Added `CL_LAYER_OPTIONS` info query for layers.

* Remove options for now as suggested by the working group.
diff --git a/CL/cl_layer.h b/CL/cl_layer.h
index 59dae75..fe628bf 100644
--- a/CL/cl_layer.h
+++ b/CL/cl_layer.h
@@ -28,6 +28,7 @@
 typedef cl_uint cl_layer_info;
 typedef cl_uint cl_layer_api_version;
 #define CL_LAYER_API_VERSION 0x4240
+#define CL_LAYER_NAME        0x4241
 #define CL_LAYER_API_VERSION_100 100
 
 extern CL_API_ENTRY cl_int CL_API_CALL