glodShutdown - Cleans up all the memory by the GLOD library and shuts it down.
void glodShutdown(void)
This call cleans up any still-existing hierarchies and memory buffers
that are being used by GLOD and shuts it down. This call is not
mandatory.
This function should not fail. If it does, something is pretty badly
wrong anyhow, and you probably won't care that this function failed,
too.