Fix numerous compiler warnings and errors

Depending on OS and compiler, certain types may not be included
transitively by headers that were included previously. This commit
produces a clean build on the latest trunk versions of GCC, Clang,
and QT.

renderdoc/common/dds_readwrite.h

@@ -24,6 +24,7 @@
 
 #pragma once
 
+#include <stdio.h>
 #include "api/replay/data_types.h"
 
 struct dds_data