Nofxx postgis_adapter

Merge branch 'globegit'

• globegit: Updated init.rb to fix the change in the Arel module hierarchy so that the geometry type works. Ignore geography_columns in postgis adapter when doing schema dump. Get rid of that Jeweler stuff, update the gemspec, and add rake tasks for gem creation and installation. remove debug puts postgis_adapter changes: -rails turns off referential constraints for loading fixtures, then turns it back on after load. --changes to not do it for postgis tables including geography_columns, geometry_columns and spatial_ref_sys. In: disable_referential_integrity. --setup up postgres postgis for test db, including createlang, and load posgis.sql, spatial_ref_sys.sql. In : create_database method. Adding support to create a Test PostGIS database; from git://github.com/melriffe/spatial_adapter.git https://github.com/nofxx/postgis_adapter/commit/cec0d9366c9b2ec90bf...