Upgrade to Newton 3.14 and make it a thirdparty lib

thirdparty/src/newton/dgCore/dgRefCounter.h

@@ -0,0 +1,72 @@
+/* Copyright (c) <2003-2019> <Julio Jerez, Newton Game Dynamics>
+* 
+* This software is provided 'as-is', without any express or implied
+* warranty. In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* 
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation would be
+* appreciated but is not required.
+* 
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef __DGREF_COUNTER__
+#define __DGREF_COUNTER__
+
+class dgRefCounter
+{
+	public:
+	dgRefCounter(void);
+	int GetRef() const;
+	int Release();
+	void AddRef();
+
+	protected:
+	virtual ~dgRefCounter(void);
+
+	private:
+	int m_refCount;
+};
+
+
+inline dgRefCounter::dgRefCounter(void)
+{
+	m_refCount = 1;
+}
+
+inline dgRefCounter::~dgRefCounter(void)
+{
+	dgAssert (m_refCount <= 1);
+}
+
+
+inline int dgRefCounter::GetRef() const
+{
+	return m_refCount;
+}
+
+inline int dgRefCounter::Release()
+{
+	m_refCount --;
+	if (!m_refCount) {
+		delete this;
+		return 0;
+	}
+	return m_refCount;
+}
+
+inline void dgRefCounter::AddRef()
+{
+	m_refCount ++;
+}
+
+#endif