Add ConcurrencyView_Properties.aadl as dependency

templates/skeletons/makefile.tmplt

@@ -75,6 +75,11 @@ build/deploymentview_final/Makefile:	build/main.aadl ${DATAVIEW_AADLV2} ../Concu
 	taste-patch-cv-properties.py build/system.aadl ../ConcurrencyView_Properties.aadl
 	cd build && ocarina -x main.aadl
 
+@@-- ConcurrencyView_Properties is normally always present (even if empty) as
+@@-- it is generated by the GUIs... Just in case it is not there, create it.
+../ConcurrencyView_Properties.aadl:
+	touch $@
+
 # Create dataview-uniq.asn by concatenating all asn1 input files
 ${DATAVIEW_UNIQ}:	@_REPLACE_ALL(,/):ASN1_Files_@
 	mkdir -p ${PROJECT_CACHE} && mkdir -p ${DATAVIEW_PATH}