Philippe 08/07/2019: OpenACC: fix: missing data directive

src/MNH/modeln.f90

@@ -1492,6 +1492,9 @@ XTIME_LES_BU_PROCESS = 0.
 !$acc update device(XUT, XVT, XWT, XRHODJ)
 !
 !
+!$acc data copyin (XTKET, XRSVS_CLD) &
+!$acc &    copy   (XRTKES, XRSVS)    &
+!$acc &    copyout(XRTKEMS)
 CALL ADVECTION_METSV ( TZBAKFILE, GCLOSE_OUT,CUVW_ADV_SCHEME,          &
                  CMET_ADV_SCHEME, CSV_ADV_SCHEME, CCLOUD, NSPLIT,      &
                  LSPLIT_CFL, XSPLIT_CFL, LCFL_WRIT,                    &