Fix in btQuickprof that caused crash in ConcaveConvexcastDemo.cpp

Thanks to Roman Ponomarev for the report
Make btVector3::rotate const
Thanks to lepoussin, see Issue 428
CMakeLists.txt improvement: don't copy resources when INTERNAL_CREATE_DISTRIBUTABLE_MSVC_PROJECTFILES is set
CMakeLists.txt improvement: INSTALL_EXTRA_LIBS for ConvexDecomposition and GIMPACTUtils
Thanks to andrebra, see Issue 425

src/LinearMath/btQuickprof.cpp

@@ -87,6 +87,19 @@ btClock::~btClock()
 	delete m_data;
 }
 
+btClock::btClock(const btClock& other)
+{
+	m_data = new btClockData;
+	*m_data = *other.m_data;
+}
+
+btClock& btClock::operator=(const btClock& other)
+{
+	*m_data = *other.m_data;
+	return *this;
+}
+
+
 	/// Resets the initial reference time.
 void btClock::reset()
 {