Forgot one file...
Fix efff7af. Workaround for max_align_t is now detected

- add a try_compile detection for the need of max_align_t declaration.
- the clang version is unreliable.
- cf efff7af and comments.
Fix iefff7af : Correction to previous commit
[gfs,arrays] Fix index generator flat index + 1 bug in matrix_proxy

- gfs : when constructing the index, the i_flat index was not
  recomputed.
- specialize the evaluator for mesh_point: simpler, better perf. no need
  to take modulo
- [arrays] : in the special case of a proxy = same type,
  rare, e.g. g(x) << h(x), which is not usual,
  the operator = (RHS) is not taken for the class itself.
  Usual C++ pb, one needs to overload for default copy assigment.
Fix #141

- following Igor's suggestion
add test for bubble computation
added bubble test using scalar functions
Fix reinterpret_scalar_valued_gf_as_matrix_valued

- Was not correct (bubble_scalar) because of missing start_shift
  for multivar gf.
[exceptions] Add mpi node number and C++ trace to C++ exceptions.

- Trace : to be decided if we keep it -> or put it in the python object.
Revert "Modify det_manip to access determinant x_values and y_values"

This reverts commit d8e79056bffc13598ca63305610c5edd2182c21f.

After all, these functions are not useful...
[arrays] Add frobenius_norm to the lib.

-TODO : add the test !
-from cthyb project.
- change the name of the file
Add macro TRIQS_WRAP_ARG_AS_DICT for python parameter wrap

- Rename the attribute((annotate(...))
  because i) it is clearer ii) it leads to a warning on gcc.
Correct 0c34877b9babdd07f5a6e99ed172b967124b7e8e

- The char * was dangling ..
- add TRIQS_EXCEPTION_SHOW_CPP_TRACE
  if defined, the C++ trace will be added to the error message.
  Mainly for debug purpose only, it is disturbing for normal usage,
  since it leads people to believe the code has crashed...
added includes in gfs header
Fix #142. boost serialization of matsubara_freq_mesh.

boost serialization of matsubara_freq_mesh was broken
by the introduction of the window for the MPI api...
Fix hdf5 formats

- block gf : clean the hdf5 format
- doc