* dcrt0.cc (child_info_spawn::handle_spawn): Drop artificial
supplementary group list from calling setgroups in parent.
* grp.cc (internal_getgroups): Drop 9x-only code. Reformat.
* sec_auth.cc (get_logon_server): Do everything in WCHAR only.
(get_user_groups): Ditto. Use wlogonserver in LookupAccountNameW
calls, too.
(is_group_member): Get logon server as first argument and use in call
to NetLocalGroupGetMembers.
(get_user_local_groups): Get logon server as first argument and use in
calls to NetLocalGroupEnum and LookupAccountNameW. Revamp to work
more correctly in domain environments.
(get_server_groups): Accommodate aforementioned changed function calls.
* security.h (get_logon_server): Change prototype accordingly.
* uinfo.cc (cygheap_user::env_logsrv): Accommodate changed
get_logon_server call.
of access control functions throughout.
* fhandler_disk_file.cc: Ditto.
* fhandler_registry.cc: Ditto.
* sec_acl.cc: Drop unnecessary includes.
(setacl): Take path_conv instead of file name as parameter.
Accommodate interface changes of access control functions.
(getacl): Ditto.
* sec_auth.cc: New file, taking over all authentication related
functions from security.cc.
* sec_helper.cc: Drop unnecessary includes.
* security.cc: Ditto. Move all authentication related functions to
sec_auth.cc.
(ALL_SECURITY_INFORMATION): New define. Use throughout.
(set_file_sd): New function, replacing read_sd and the file related
part of get_nt_object_security.
(get_reg_sd): Rename from get_reg_security. Drop type parameter.
(get_reg_attribute): New function, replacing the registry related part
of get_nt_object_security.
(get_file_attribute): Take path_conv instead of file name as parameter.
Use new get_file_sd call.
(set_file_attribute): Ditto plus new set_file_sd. Drop unnecessary
implementation without uid/gid parameters.
(check_file_access): Take path_conv instead of file name as parameter.
Use new get_file_sd call.
(check_registry_access): Use new get_reg_sd call.
* security.h: Accommodate above interface changes.