Misc cleanup (#708)

* Fix typos

* Remove unneeded using statements

* Enforce var style more

* Remove redundant qualifiers

* Fix some indentation

* Disable naming warnings on files with external enum names

* Fix build

* Mass find & replace for comments with no spacing

* Standardize todo capitalization and for/if spacing

Ryujinx.Graphics/VDec/VideoDecoder.cs

@@ -254,7 +254,7 @@ namespace Ryujinx.Graphics.VDec
                 }
             }
 
-            //Copy chroma data from both channels with interleaving.
+            // Copy chroma data from both channels with interleaving.
             for (int y = 0; y < halfHeight; y++)
             {
                 int src = y * halfSrcWidth;