r25247: Rename the rpccli_lsa_lookup_sids_all() function to rpccli_lsa_lookup_sids()

r25247: Rename the rpccli_lsa_lookup_sids_all() function to rpccli_lsa_lookup_sids()
and remove the old rpccli_lsa_lookup_sids() function. The old function would
fail due to server limits when requesting to resolve too many sids at once
(20480 for W2k3). The new version passes the list of sids in hunks to the
server. It has up to now been used (and tested) in the winbindd_ads
lookup_groupmem() function, and I think the time has come to replace the actual
function with this correct version.

Michael