AER-1487 - bin iteration - add a record hook and function for getting a list of a record's bin names.
AER-1487 - bin iteration - improve memory usage and efficiency by returning the bin names in a Lua table.
Merge branch 'master' into bin-iteration
Fix in shash_deleteall_lockfree and shash_deleteall to clean hash
bucket, if there is only one element in it. XDR is the only current user
of these functions.