move stb_image/stb_image_write.cpp into a cpp file instead of random files with the magic 'STB_IMAGE_WRITE_IMPLEMENTATION' define

move setup.py back to eglRenderer extension, use pkgutil.get_loader('eglRenderer').get_filename()
disable dlmopen by default, unless B3_USE_DLMOPEN is defined.

examples/SharedMemory/plugins/eglPlugin/eglRendererPlugin.cpp

@@ -1,4 +1,12 @@
 
+#ifdef EGL_ADD_PYTHON_INIT
+#if defined(__APPLE__) && (!defined(B3_NO_PYTHON_FRAMEWORK))
+#include <Python/Python.h>
+#else
+#include <Python.h>
+#endif
+#endif //EGL_ADD_PYTHON_INIT
+
 //eglRenderer plugin
 
 //see Bullet/examples/pybullet/examples/eglRendererTest.py
@@ -52,3 +60,15 @@ B3_SHARED_API struct UrdfRenderingInterface* getRenderInterface_eglRendererPlugi
 	return &obj->m_renderer;
 }
 
+
+#ifdef EGL_ADD_PYTHON_INIT
+PyMODINIT_FUNC
+#if PY_MAJOR_VERSION >= 3
+PyInit_eglRenderer(void)
+#else
+initeglRenderer(void)
+#endif
+{
+	return 0;
+}
+#endif //EGL_ADD_PYTHON_INIT