First part of render texture commit

Added NzContext::EnsureContext and NzContext::GetThreadContext
Added NzCube
Added NzRect::GetCenter
Added methods to send vectors to shaders
Added NzRenderer::SetViewport
Fixed NzRect::ExtendTo calculations
Fixed NzImage::Update checks with level > 0
No longer use glTexStorage when creating a texture to prevent a bug
NzBuffer's Lock and Unlock operations renamed to Map and Unmap
NzVector2/3/4 can now cast implicitly to a pointer
Optimized compilation time of String.hpp
Optimized normalisaton of quaternions
Optimized passing uniforms to shaders
Quaternion now automaticaly Normalize h
Removed macro definition of NAZARA_RENDERER_OPENGL from Renderer
Removed implicit cast from NzVector2/3/4 to NzString
Renamed nzBufferLock to nzBufferAccess
Renamed NzRenderTarget::CanActivate to IsValid

src/Nazara/Core/File.cpp

@@ -313,7 +313,7 @@ std::size_t NzFile::Read(void* buffer, std::size_t typeSize, unsigned int count)
 	{
 		unsigned int typeCount = byteRead/typeSize;
 		for (unsigned int i = 0; i < typeCount; ++i)
-			NzByteSwap(static_cast<char*>(buffer) + i*typeSize, typeSize);
+			NzByteSwap(reinterpret_cast<nzUInt8*>(buffer) + i*typeSize, typeSize);
 	}
 
 	return byteRead;

src/Nazara/Core/MemoryStream.cpp

@@ -8,7 +8,7 @@
 #include <Nazara/Core/Debug.hpp>
 
 NzMemoryStream::NzMemoryStream(const void* ptr, nzUInt64 size) :
-m_ptr(static_cast<const nzUInt8*>(ptr)),
+m_ptr(reinterpret_cast<const nzUInt8*>(ptr)),
 m_pos(0),
 m_size(size)
 {

src/Nazara/Core/Win32/ThreadImpl.cpp

@@ -67,7 +67,7 @@ void NzThreadImpl::Terminate()
 
 unsigned int _stdcall NzThreadImpl::ThreadProc(void* userdata)
 {
-	NzThread* owner = static_cast<NzThread*>(userdata);
+	NzThread* owner = reinterpret_cast<NzThread*>(userdata);
 	NzFunctor* func = owner->m_func;
 	HANDLE myHandle = owner->m_impl->m_thread;
 	func->Run();