Allow adding points and polygons to the same table

(cherry picked from commit 79ac3c4a346fa7b022367114d17e53ebff3014c9)
Add support for PostgreSQL HSTORE

(cherry picked from commit 82a0eb5f03631c759756f7835ea9b0c7f0384bb9)
Allow storing all tags

(cherry picked from commit 818318f7ac299b8b2bf51f5c97bb1f9d192da5a5)