[+] Support for AuPair<T,Z>s as hashtable and binary tree keys

Include/auROXTL/auHashUtils.hpp

@@ -217,6 +217,21 @@ inline AuUInt AuHashCode(const T &ref)
     return AuHash::hash<T>()(ref);
 }
 
+#include <auROXTL/auTuple.hpp>
+
+namespace AuHash
+{
+    template <typename T, typename Z>
+    struct hash<AuPair<T, Z>>
+    {
+        constexpr AuUInt operator ()(const AuPair<T, Z> &pair) const
+        {
+            return AuHashCode(AuGet<0>(pair)) ^
+                AuHashCode(AuGet<1>(pair));
+        }
+    };
+}
+
 template <class T>
 struct AuEnableHashCodeOnData
 {