ECC-1821 adding configurations for mmsf/an

definitions/mars/grib.mmsf.an.def

@@ -0,0 +1,26 @@
+if (levtype is "o2d" || levtype is "o3d") {
+   alias mars.step = stepRange;
+} else {
+   alias mars.step = endStep;
+}
+
+if (class is "od") { alias mars.system = systemNumber; }
+if (class is "me") { alias mars.system = systemNumber; }
+if (class is "en") { alias mars.system = systemNumber; }
+if (class is "c3") { alias mars.system = systemNumber; }
+if (class is "ci") { alias mars.system = systemNumber; }
+alias mars.number = perturbationNumber;
+alias mars.method = methodNumber;
+
+if (!(class is "gw")) { # ECC-1448
+    alias mars.origin = centre;
+}
+
+# See ECC-624
+if (centre == 80 && subCentre == 98 && class is "c3") {
+  constant cnmc_cmcc = 'cmcc';
+  alias mars.origin = cnmc_cmcc;
+}
+
+if (class is "ci") { unalias mars.method; }
+