Refactor use of math and other headers across the codebase.

* Delete mathstuff.h and defs.h.
* Move typedefs into util/types.h.
* Move definitions into util/defs.h.
* Use std::min and std::max for math_min and math_max.
* Replace math_clamp with a template function to prevent repeated sub-expressions.
* Add a Result enum for SoundSource::open() and SoundSource::parseHeader().
* Misc. other header-related cleanups.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/engine/readaheadmanager.h b/src/engine/readaheadmanager.h
index 3f6f4f8ccc..9e6d69f6a9 100644
--- a/src/engine/readaheadmanager.h
+++ b/src/engine/readaheadmanager.h
@@ -9,7 +9,8 @@
 #include <QMutex>
 #include <QPair>
 
-#include "defs.h"
+#include "util/types.h"
+#include "util/math.h"
 
 struct Hint;
 class EngineControl;