World Borders alternate layers for WWJ

The 'broken' Country Boundaries layer has been an issue for some time in World Wind Java... After a quick search, here are three alternate layers to fill the gap until the NASA WMS server gets up and running again.

Metacarta country_02 layer - 12 levels, no coastline - WorldBordersMetacartaLayer.java

Freemap factbook layer - 12 levels, not so clean - WorldBordersFreemapLayer.java

Katrina OWS world layer - 5 levels only - WorldBordersKatrinaOWSLayer.java