Use $(ICU_MAJOR) instead of hard coded (Upgrade to ICU 62.1)

Change-Id: Ifea7072922388b2c0b7631fb809b23e2a5524a3c

ios/CustomTarget_iOS_setup.mk

@@ -54,7 +54,7 @@ $(IOSGEN)/native-code.h: $(BUILDDIR)/config_host.mk \
 	    > $(IOSGEN)/native-code.h
 
 	# copy resource files used to start/run LibreOffice
-	cp $(WORKDIR)/UnpackedTarball/icu/source/data/in/icudt61l.dat $(IOSRES)/icudt61l.dat
+	cp $(WORKDIR)/UnpackedTarball/icu/source/data/in/icudt$(ICU_MAJOR)l.dat $(IOSRES)/icudt$(ICU_MAJOR)l.dat
 	cp $(INSTDIR)/program/types.rdb             $(IOSRES)/udkapi.rdb
 	cp $(INSTDIR)/program/types/offapi.rdb      $(IOSRES)
 	cp $(INSTDIR)/program/types/oovbaapi.rdb    $(IOSRES)