#PostGIS upgrade made easy

Build and install from master branch to get it,
report issues on https://trac.osgeo.org/postgis

Happy upgrading !

$ postgis upgrade
upgrading PostGIS in db postgres if needed
upgrading PostGIS in db strk if needed
upgrading PostGIS in db template1 if needed
upgrading PostGIS in db nibio_reg if needed
upgrading PostGIS in db postgis_garden if needed