PACKAGE_INSTALL now stands for both installation and upgrades

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@795 0fc631ac-6414-0410-93d0-97cfa31319b6

src/data/set.cpp

@@ -131,6 +131,7 @@ void fix_value_207(const ValueP& value) {
 }
 
 void Set::validate(Version file_app_version) {
+	Packaged::validate(file_app_version);
 	// are the
 	if (!game) {
 		throw Error(_ERROR_("no game specified for the set"));