SYNOPSIS
string get_root_uid(void)
DESCRIPTION
Return the string to be used as root-uid.
Under !native, the function is expendable.
HISTORY
In 3.2.1@40, get_root_uid() was renamed to get_master_uid()
and recieved a new semantic.
SEE ALSO
get_bb_uid(M), get_master_uid(M), uids(C), creator_file(M), creator(E)