GML LinearRing is not supported in ST_GeomFromGML

[colivier]

gml:LinearRing represent a single ring (so an exterior one)

SELECT ST_AsEWKT(ST_GeomFromGML('<gml:LinearRing srsName="urn:ogc:def:crs:EPSG::4326">
               <gml:posList>57.0 7.5 57.0 8.5 58.0 8.5 58.0 7.5 57.0 7.5</gml:posList>
            </gml:LinearRing>
'));
                        st_asewkt                        
---------------------------------------------------------
 SRID=4326;POLYGON((7.5 57,8.5 57,8.5 58,7.5 58,7.5 57))

[colivier]

Commited as r7071 and unit tests as r7072.