rework scheduled tasks in preparation of common project going portable

MediaBrowser.Model/IO/StreamDefaults.cs

@@ -0,0 +1,19 @@
+
+namespace MediaBrowser.Model.IO
+{
+    /// <summary>
+    /// Class StreamDefaults
+    /// </summary>
+    public static class StreamDefaults
+    {
+        /// <summary>
+        /// The default copy to buffer size
+        /// </summary>
+        public const int DefaultCopyToBufferSize = 81920;
+
+        /// <summary>
+        /// The default file stream buffer size
+        /// </summary>
+        public const int DefaultFileStreamBufferSize = 81920;
+    }
+}