Philippe 05/02/2019: ada: use intel/2018.2 (intel/2013.1 has problems with newunit) and Intel MPI environment (POE not compatible with Intel from intel/2015.2)

* always set MNH_REAL (8 by default)
* MNH_REAL has to be set to 4 or 8 (and not R4 or R8)
* XYZ is slightly modified to contain ...-ARCH-RxIy-...
* pass MNH_REAL to pre-processing
* replace MNH_REALS by MNH_REAL

* corrected intent in READ_ALL_DATA_GRIB_CASE
* workaround for compiler bug (Intel 2013.1) in IO_WRITE_HEADER
* use own NetCDF (bug in default version of Ada (4.1.3))

(cherry picked from commit 4691b211)

Juan 28/09/2017:configure, for ECMWF/CCA , rm eccode module( pb with I/O print* ) & upgrade to intel/17.0.3.053

Juan 12/12/2016: configure, for ECMWF , switch by default to new ifort compiler, old cray cdt/1.15_8.2.7 in 2nd choose

(cherry picked from commit 9746cd3e)

(cherry picked from commit 532f44d0)