Keep Right/320 *link connections

Message: This way is tagged as highway=$1_link but doesn't have a connection to any other $1 or $1_link

Checks highway=motorway_link, highway=trunk_link, highway=primary_link and highway=secondary_link, if they are linked to same class highway type highway=motorway, highway=trunk, highway=primary and highway=secondary at least on one side.

Continent	World	Africa	America-Canada	America-Central	America-South	America-US	Asia	Australia-Oceania	Europe
20150907	6,527	194	91	456	717	1,234	3,100	62	673
20141230	6,357	213	114	573	795	1,411	2,591	58	602
20140423	6,926	252	136	596	1,073	1,524	2,601	64	680
20131003	7,131	245	165	571	1,356	1,646	2,254	71	823
20130710	6,770	233	170	502	1,314	1,679	2,014	65	793
20130116	6,783	242	248	574	1,159	1,851	1,824	89	796
20121112	7,061	212	271	556	1,196	2,038	1,747	111	930
20121015	7,107	205	329	553	1,081	2,139	1,692	119	989
20120926	7,306	207	335	533	1,087	2,304	1,673	139	1,028
20120917	7,410	224	335	542	1,086	2,323	1,511	300	1,089
20120913	7,455	227	345	543	1,083	2,325	1,516	309	1,107