Philippe 29/03/2018: problem correction in Rules for gfortran: do not replace...

Philippe 29/03/2018: problem correction in Rules for gfortran: do not replace AINT by INT (AINT is for reals, INT for integers)
This was the origin of problems with management of XUNDEF in SURFEX
because XUNDEF can not be represented by a standard integer

src/Rules.LXgfortran.mk

@@ -81,7 +81,7 @@ CPPFLAGS_SURFEX    =
 CPPFLAGS_SURCOUCHE += -DMNH_LINUX -DDEV_NULL  -DMNH_MPI_RANK_KIND=$(MNH_MPI_RANK_KIND)
 CPPFLAGS_RAD       =
 CPPFLAGS_NEWLFI    = -DSWAPIO -DLINUX -DLFI_INT=${LFI_INT} -DLFI_RECL=${LFI_RECL}
-CPPFLAGS_MNH       = -DMNH -DSFX_MNH -DAINT=INT -DAMOD=MOD
+CPPFLAGS_MNH       = -DMNH -DSFX_MNH
 ifdef VER_GA
 CPPFLAGS_SURCOUCHE += -DMNH_GA
 INC                += -I${GA_ROOT}/include