Changeset 6362 for CONFIG/UNIFORM/v7/IPSLCM7/SOURCES

Modified sponge parameters ICOLMDZ to use same treatment as LMDZ (iflag_sponge=2, mode_sponge=3).
Remind :
iflag_sponge !0 --> for no sponge

!1 --> for sponge over 4 topmost layers
!2 --> for sponge from top to ~1% of top layer pressure

mode_sponge !1 --> u and v relax towards 0

!2 --> u and v relax towards their zonal mean
!3 --> u,v and pot. temp. relax towards their zonal mean