PyBullet OpenGL/EGL hardware getCameraImage: use glViewport to reduce the glReadPixels calling cost dramatically for small images

PyBullet Allow OpenGL/EGL hardware to render segmentation mask. Use pybullet.ER_SEGMENTATION_MASK_OBJECT_AND_LINKINDEX or pybullet.ER_SEGMENTATION_MASK
PyBullet.removeBody fix indexing bug (use foundIndex, not i)
PyBullet bump up version to 2.2.3

examples/SharedMemory/SharedMemoryPublic.h

@@ -746,6 +746,7 @@ enum EnumRendererAuxFlags
 {
 	ER_SEGMENTATION_MASK_OBJECT_AND_LINKINDEX = 1,
 	ER_USE_PROJECTIVE_TEXTURE = 2,
+	ER_SEGMENTATION_MASK=4,
 };
 
 ///flags to pick the IK solver and other options