SYNOPSIS
	string get_master_uid(void)

DESCRIPTION
	Return the string to be used as root-uid.
	Under !native, the function is expendable.

HISTORY
	Introduced in 3.2.1@40 replacing get_root_uid().

SEE ALSO
	get_bb_uid(M), get_master_uid(M), uids(C), creator_file(M), creator(E)