* sec_acl.cc (aclsort32): Set errno to EINVAL if aclcheck32 failed.
	* setfacl.c (getaclentry): Fix return value in case of a lone 'm' if
	action is Delete.  Drop requirement for a trailing colon if action is
	Delete.
	* setfacl.c (getaclentry): Fix previous fix again.  Allow lone 'm' as
	well as any lone default entry if action is Delete.  Fix comments.
	(usage): Align usage text.
	* utils.xml (setfacl): Align documentation to help text in setfacl.
	* setfacl.c (addmissing): New function to add missing acl entries to
	a modified acl per the rules set by aclcheck.
	(setfacl): Call addmissing unless action is Delete.
	* sec_acl.cc (aclcheck32): Check for required default entries as well.
	Enable check for missing CLASS_OBJ entries, now that setfacl creates
	them.