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/Shader/Translation/Optimizations/HalfConversion.cs

@@ -12,7 +12,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
 
             if (exponent == 0x1f)
             {
-                //NaN or Infinity.
+                // NaN or Infinity.
                 mantissa <<= 13;
                 exponent   = 0xff;
             }
@@ -20,7 +20,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
             {
                 if (exponent == 0)
                 {
-                    //Denormal.
+                    // Denormal.
                     int e = -1;
                     int m = mantissa;