i18n: xgettext --from-code=utf-8 (#2061)

locale/Makefile

@@ -50,12 +50,12 @@ pot:
 	fi
 	@rm -f ./templates/*.pot
 	@echo "Generating $(LIBDOMAIN)..."
-	xgettext --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(LIBDOMAIN).pot `$(LIB_POTFILES)`
+	xgettext --from-code=utf-8 --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(LIBDOMAIN).pot `$(LIB_POTFILES)`
 	@echo "Generating $(MODDOMAIN)..."
-	xgettext --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(MODDOMAIN).pot `$(MOD_POTFILES)`
-	xgettext -j --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(MODDOMAIN).pot `$(MOD_PYFILES)` 
+	xgettext --from-code=utf-8 --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(MODDOMAIN).pot `$(MOD_POTFILES)`
+	xgettext --from-code=utf-8 -j --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(MODDOMAIN).pot `$(MOD_PYFILES)`
 	@echo "Generating $(WXPYDOMAIN)..."
-	xgettext --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(WXPYDOMAIN).pot `$(WXPY_POTFILES)` 
+	xgettext --from-code=utf-8 --keyword=_ --keyword=n_:1,2 -cGTC -o ./templates/$(WXPYDOMAIN).pot `$(WXPY_POTFILES)`
 
 #merge already existing translations with new messages in POT template file and create new po files:
 update-po: