Java-style "packaged" module names in bif.tab

[Andrey Pampukha]

Hi all,

Just curious about some BIFs named in the following notation found in
erts/emulator/beam/bif.tab:
bif 'erl.lang.float':from_string/1
bif 'erl.lang.integer':from_string/1
bif 'erl.lang.proc':string_to_pid/1
bif 'erl.lang.tuple':from_list/1
bif 'erl.system.code':load/2
bif 'erl.system.code':loaded/0
bif 'erl.util.date':local/0

For how long and why they are there?
I've read manual page for 'packages' (
http://erlang.org/doc/man/packages.html) and I guess all those 'erl'.*
modules were introduced at the same moment as this unsupported feature.
Am I right? Is there any plans to occasionally start supporting this? I know
it's not very important "feature", but it could be interesting...

Thanx!

Andrey.