Port of lsa_lookup_sids() and lsa_lookup_names() rpc client functions from

Port of lsa_lookup_sids() and lsa_lookup_names() rpc client functions from
TNG branch.

Re-instated lsa_lookup_sids and lsa_lookup_names functions in rpcclient.

This requires most samba binaries to link in another handful of object
files due to uncessary coupling between modules.  )-:
(This used to be commit 817819d0cc3ecf642be5a1656be3b71bed260ee4)