Code style fixes and nits on the HLE project (#355)

* Some style fixes and nits on ITimeZoneService

* Remove some unneeded usings

* Remove the Ryujinx.HLE.OsHle.Handles namespace

* Remove hbmenu automatic load on process exit

* Rename Ns to Device, rename Os to System, rename SystemState to State

* Move Exceptions and Utilities out of OsHle

* Rename OsHle to HOS

* Rename OsHle folder to HOS

* IManagerDisplayService and ISystemDisplayService style fixes

* BsdError shouldn't be public

* Add a empty new line before using static

* Remove unused file

* Some style fixes on NPDM

* Exit gracefully when the application is closed

* Code style fixes on IGeneralService

* Add 0x prefix on values printed as hex

* Small improvements on finalization code

* Move ProcessId and ThreadId out of AThreadState

* Rename VFs to FileSystem

* FsAccessHeader shouldn't be public. Also fix file names casing

* More case changes on NPDM

* Remove unused files

* Move using to the correct place on NPDM

* Use properties on KernelAccessControlMmio

* Address PR feedback

Ryujinx.Audio/IAalOutput.cs

@@ -1,6 +1,8 @@
+using System;
+
 namespace Ryujinx.Audio
 {
-    public interface IAalOutput
+    public interface IAalOutput : IDisposable
     {
         int OpenTrack(int SampleRate, int Channels, ReleaseCallback Callback);
 

Ryujinx.Audio/OpenAL/OpenALAudioOut.cs

@@ -8,7 +8,7 @@ using System.Threading;
 
 namespace Ryujinx.Audio.OpenAL
 {
-    public class OpenALAudioOut : IAalOutput
+    public class OpenALAudioOut : IAalOutput, IDisposable
     {
         private const int MaxTracks = 256;
 
@@ -222,10 +222,17 @@ namespace Ryujinx.Audio.OpenAL
                     Td.CallReleaseCallbackIfNeeded();
                 }
 
-                //If it's not slept it will waste cycles
+                //If it's not slept it will waste cycles.
                 Thread.Sleep(10);
             }
             while (KeepPolling);
+
+            foreach (Track Td in Tracks.Values)
+            {
+                Td.Dispose();
+            }
+
+            Tracks.Clear();
         }
 
         public int OpenTrack(int SampleRate, int Channels, ReleaseCallback Callback)
@@ -342,5 +349,18 @@ namespace Ryujinx.Audio.OpenAL
 
             return PlaybackState.Stopped;
         }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        protected virtual void Dispose(bool Disposing)
+        {
+            if (Disposing)
+            {
+                KeepPolling = false;
+            }
+        }
     }
 }