moved everything into /trunk/ to create the standard svn layout, for use with tools that require this (eg. git-svn). IMPORTANT: do NOT do an `svn up`. instead, re-use your working copy's existing files with `svn switch` (http://svnbook.red-bean.com/en/1.6/svn.ref.svn.c.switch.html).

Split up geonames-to-gadm.sql into 3 scripts.

Each script only operates on one table within a transaction.
These scripts now assume the tables have already been created (by
install scripts added in a previous commit), and each starts out by
truncating the table it will update with new data.

Added indexes to speed up geonames-to-gadm.sql.

Without these indexes, these queries could take hours to complete.
With them, the times more closely matched the times Jim noted in the sql
comments.

added derived/biengeo/ from https://projects.nceas.ucsb.edu/nceas/projects/biengeo/repository/