add InProcessExampleBrowser to make it easy to instantiate the ExampleBrowser in its own thread

example usage:

int main(int argc, char* argv[])
{

btInProcessExampleBrowserInternalData* data = btCreateInProcessExampleBrowser(argc,argv);

while (!(btIsExampleBrowserTerminated(data)))
{
}

btShutDownExampleBrowser(data);

        return 0;
}

examples/ExampleBrowser/CMakeLists.txt

@@ -15,6 +15,7 @@ SET(App_ExampleBrowser_SRCS
 	main.cpp
 	ExampleEntries.cpp
 	ExampleEntries.h
+	InProcessExampleBrowser.cpp
 	../SharedMemory/PhysicsServer.cpp
 	../SharedMemory/PhysicsClientSharedMemory.cpp
 	../SharedMemory/PhysicsClient.cpp