Correction of mathematical functions.

BoundingVolume: Add of constructor and setter OrientedBox. Extend is now
up to date.
Box: Use of <T>. Return this
Frustrum: Use of <T>
Matrix: Use of <T>
OrientedBox: m_corners is up to date
Rect: Add of operators /= and /. Return this
Sphere: Add of Intersect and Contains with box. Little corrections.
Vector2: Return

TaskSchedulerImpl: Add of include header cstdlib to compile because of
std::div
HardwareInfo/main: use of accentAigu

Former-commit-id: a5a7f8e8c45448e5683eb13bff453d6f67478d03

src/Nazara/Core/Win32/TaskSchedulerImpl.cpp

@@ -4,9 +4,10 @@
 
 #include <Nazara/Core/Win32/TaskSchedulerImpl.hpp>
 #include <Nazara/Core/Config.hpp>
-#include <Nazara/Core/Error.hpp>
-#include <process.h>
 #include <Nazara/Core/Debug.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <cstdlib>
+#include <process.h>
 
 bool NzTaskSchedulerImpl::Initialize(unsigned int workerCount)
 {