domain group and local group API needed

[Luke Kenneth Casson Leighton]

in the spirit of the "Re: password API needed", let the fun and games
begin again, this time on domain and local groups, respectively.

starting with structures like these:

/*** query a local group, get a list of these: shows who is in that group ***/

/* local group member info */
typedef struct local_grp_member_info
{
	DOM_SID sid    ; /* matches with name */
	uint8   sid_use; /* usr=1 grp=2 dom=3 alias=4 wkng=5 del=6 inv=7 unk=8 */
	fstring name   ; /* matches with sid: must be of the form "DOMAIN\account" */

} LOCAL_GRP_MEMBER;

/* enumerate these to get list of local groups */

/* local group info */
typedef struct local_grp_info
{
	fstring name;
	fstring comment;

} LOCAL_GRP;

/*** enumerate these to get list of domain groups ***/

/* domain group member info */
typedef struct domain_grp_info
{
	fstring name;
	fstring comment;
	uint32  rid; /* group rid */
	uint8   attr; /* attributes forced to be set to 0x7: SE_GROUP_xxx */

} DOMAIN_GRP;

/*** query a domain group, get a list of these: shows who is in that group ***/

/* domain group info */
typedef struct domain_grp_member_info
{
	fstring name;
	uint8   attr; /* attributes forced to be set to 0x7: SE_GROUP_xxx */

} DOMAIN_GRP_MEMBER;