Work around bug in wx path conversion from filenames in zip files for files...

Work around bug in wx path conversion from filenames in zip files for files with strange (unicode) names

src/util/io/package.cpp

@@ -310,7 +310,7 @@ void Package::loadZipStream() {
 	while (true) {
 		wxZipEntry* entry = zipStream->GetNextEntry();
 		if (!entry) break;
-		String name = normalize_internal_filename(entry->GetName());
+		String name = normalize_internal_filename(entry->GetName(wxPATH_UNIX));
 		files[name].zipEntry = entry;
 	}
 	zipStream->CloseEntry();