Only for Elgg 1.9 / Elgg-master: elgg_get_metadata_cache() renamed

function elgg_get_metadata_cache renamed to _elgg_get_metadata_cache in hooks.php. It is renamed since 07-2013 in Elgg-master.
(_elgg_get_metadata_cache ist marked as private, but it was marked in 1.8 branch too)

Before merging, it seems better to create a new branch elgg_1.8