Add occigen environment

specfem3d/env/env_occigen

+#!/bin/bash
+
+module purge
+module load intel/18.1 intelmpi/2018.1.163
+
+export machine=occigen
+export software=specfem3d_globe
+export version=31octobre
+
+export install_dir=$SCRATCHDIR/benchmarks/$machine/$software/$version/${compiler}/$compiler_version/$libmpi/${mpi_release}
+
+export CC="mpiicc"
+export FC="mpiifort"
+export MPIFC=$FC
+export FCFLAGS=" -g -O3 -qopenmp -xhost -DUSE_FP32 -DOPT_STREAMS -fp-model fast=2 -traceback -mcmodel=large"
+export CFLAGS=" -g -O3  -xhost "