[maven-release-plugin] copy for tag org.gvsig.postgresql-2.0.20
#2411 Closing connection after getting Postgis version (patch provided by fdiaz)
Fix full envelope base filterrefs #2293
#2170 Added support for versions of PostGIS < 1.3
#2190 Fixed management of not-so-common data types in databases (patch provided by fdiaz)
#2161 Fixed function name
#1911 Fixed filtering
#2129 Added working area filter and fixed PostGIS function names
#1905 Fixed creation of SQL filter
#2089 Fixed condition when source is based on a custom SQL sentence (patch provided by jmvivo)
#2088 Prevented null in value returned by method
#2090 Setting default geometry type in case field is not registered in geometry_columns table. Patch provided by jmvivo
Overriding methods to prevent class loader issues
More restrictive escaping method
Initial import.