Juan 12/12/2016: job_make_examples_CRAY_cca,job_make_mesonh_CRAY_cca , switch to default ifort compiler

Juan 12/12/2016: Rules.LXcray.mk , for problem with *.mod generation, add -em -ef for cdf/grib_api lib creation

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 a7a6578a)

Philippe 09/12/2016: re-added #ifndef MNH_SP4 to prevent problems when compiling on Blue Gene/Q with -qautodbl=4

(cherry picked from commit 9746cd3e)

(cherry picked from commit 7a1e8bc2)

Revert "Christine 25/11/2016 : Correction on the flag for Strang splitting to insure reproducibility between START and RESTA"

This reverts commit d4b7d37a.