Platform-specific sanitize logic

Sanitize logic now works differently depending on the platform, including new support for Linux.

libdino/src/service/file_manager.vala

@@ -46,9 +46,12 @@ public class FileManager : StreamInteractionModule, Object {
         return ret;
     }
 
-    // Required to allow Windows users to receive files with illegal characters in name
     private string sanitize_filename(string filename) {
+#if _WIN32
         GLib.Regex regex = new GLib.Regex("[<>:\"/\\|?*]");
+#else
+        GLib.Regex regex = new GLib.Regex("[\/\x00]");
+#endif
         return regex.replace(filename, -1, 0, "_");
     }