Moved discovery of loggers and weather providers to MEF. Also added support for third-party image processors, also discovered through MEF.

MediaBrowser.Common/Logging/TraceFileLogger.cs

@@ -0,0 +1,38 @@
+using MediaBrowser.Common.Kernel;
+using System;
+using System.ComponentModel.Composition;
+using System.Diagnostics;
+using System.IO;
+
+namespace MediaBrowser.Common.Logging
+{
+    [Export(typeof(BaseLogger))]
+    public class TraceFileLogger : BaseLogger
+    {
+        private TraceListener Listener { get; set; }
+
+        public override void Initialize(IKernel kernel)
+        {
+            DateTime now = DateTime.Now;
+
+            string logFilePath = Path.Combine(kernel.ApplicationPaths.LogDirectoryPath, "log-" + now.ToString("dMyyyy") + "-" + now.Ticks + ".log");
+
+            Listener = new TextWriterTraceListener(logFilePath);
+            Trace.Listeners.Add(Listener);
+            Trace.AutoFlush = true;
+        }
+
+        public override void Dispose()
+        {
+            base.Dispose();
+
+            Trace.Listeners.Remove(Listener);
+            Listener.Dispose();
+        }
+
+        public override void LogEntry(LogRow row)
+        {
+            Trace.WriteLine(row.ToString());
+        }
+    }
+}