Commit a6e29f23f09ba5b6b6d362f7683ae8088bc0ba85 in Samba changed id mapping
API in passdb interface to use 'struct unixid'. The change replaced three arguments
(uid, gid, type) by one (struct unixid). As result, ipa-sam became broken.
Without this change ipa-sam introduces stack corruption in Samba post 4.0.0alpha18
leading to corrupted security context stack as well and then crashing in setgroups(3).