Added streamGrbDefDataScanningMode().

src/stream_grb.h

@@ -46,6 +46,7 @@ extern struct cdiGribParamChange cdiGribChangeParameterID;
 extern struct cdiGribModeChange cdiGribChangeModeUvRelativeToGrid;
 extern struct cdiGribScanModeChange cdiGribDataScanningMode;
 
+// Used in CDO
 void streamGrbChangeParameterIdentification(int code, int ltype, int lev);
 void streamGrbChangeModeUvRelativeToGrid(int mode);
 void streamGrbDefDataScanningMode(int scanmode);