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.HLE/HOS/Kernel/SupervisorCall/SvcThread.cs

@@ -175,7 +175,7 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
 
         public KernelResult SetThreadPriority(int handle, int priority)
         {
-            //TODO: NPDM check.
+            // TODO: NPDM check.
 
             KThread thread = _process.HandleTable.GetKThread(handle);