Merge "Support importing property file with expanded name" into qt-dev

                while (isspace(*key)) key++;

            }

            load_properties_from_file(fn, key, properties);

            std::string raw_filename(fn);

            std::string expanded_filename;

            if (!expand_props(raw_filename, &expanded_filename)) {

                LOG(ERROR) << "Could not expand filename '" << raw_filename << "'";

                continue;

            }

            load_properties_from_file(expanded_filename.c_str(), key, properties);

        } else {

            value = strchr(key, '=');

            if (!value) continue;