[Android] Fix the removal of duplicate items from the gamelist.

This should have initially been a nested loop since it now guarantees every item in the list is checked.

Also, removed some unused code and documented some things.

Source/Android/src/org/dolphinemu/dolphinemu/DolphinEmulator.java

@@ -128,6 +128,8 @@ public void onCreate(Bundle savedInstanceState)
 				CopyAsset("setting-usa.txt",   WiiDir + File.separator + "setting-usa.txt");
 			}
 
+			// Load the configuration keys set in the Dolphin ini and gfx ini files
+			// into the application's shared preferences.
 			UserPreferences.LoadDolphinConfigToPrefs(this);
 		}
 	}
@@ -148,7 +150,6 @@ public void onActivityResult(int requestCode, int resultCode, Intent data)
 			String FileName = data.getStringExtra("Select");
 			GLview = new NativeGLSurfaceView(this);
 			this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
-			String backend = NativeLibrary.GetConfig("Dolphin.ini", "Core", "GFXBackend", "Software Renderer");
 			NativeLibrary.SetDimensions((int)screenWidth, (int)screenHeight);
 			NativeLibrary.SetFilename(FileName);
 			setContentView(GLview);

Source/Android/src/org/dolphinemu/dolphinemu/folderbrowser/FolderBrowser.java

@@ -132,17 +132,8 @@ public void onAttach(Activity activity)
 	{
 		super.onAttach(activity);
 
-		// This makes sure that the container activity has implemented
-		// the callback interface. If not, it throws an exception
-		try
-		{
-			m_activity = activity;
-		}
-		catch (ClassCastException e)
-		{
-			throw new ClassCastException(activity.toString()
-					+ " must implement OnGameListZeroListener");
-		}
+		// Cache the activity instance.
+		m_activity = activity;
 	}
 
 

Source/Android/src/org/dolphinemu/dolphinemu/gamelist/GameListFragment.java

@@ -95,11 +95,12 @@ private void Fill()
 		// so there should be no worries about accidentally removing a valid game.
 		for (int i = 0; i < fls.size(); i++)
 		{
-			int indexNext = i+1;
-
-			if (indexNext < fls.size() && fls.get(indexNext).getPath().contains(fls.get(i).getPath()))
+			for (int j = i+1; j < fls.size(); j++)
 			{
-				fls.remove(indexNext);
+				if (fls.get(j).getPath().equals(fls.get(i).getPath()))
+				{
+					fls.remove(j);
+				}
 			}
 		}