Model send_by_ref according to get_by_ref.

Make send_by_ref stable and its structure the same as get_by_ref.
Add a "dummy" component into the test's derived type to figure
incorrect offset computation.

Author: vehre

CMakeLists.txt

@@ -950,6 +950,8 @@ if(opencoarrays_aware_compiler)
   add_caf_test(issue-700-allow-multiple-scalar-dim-array-gets 2 issue-700-allow-multiple-scalar-dim-array-gets)
   add_caf_test(issue-762-mpi-crashing-on-exit 2 issue-762-mpi-crashing-on-exit)
 
+  add_caf_test(issue-654-send_by_ref_rank_2       3 issue-654-send_by_ref_rank_2)
+
   # IMAGE FAIL tests
   if(NOT CMAKE_Fortran_COMPILER_VERSION VERSION_LESS 7.0.0)
     if(CAF_ENABLE_FAILED_IMAGES)