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).

Fixed TRUNCATE statement in truncate.geonames.sql.

Fixed the biengeo truncate.geonames.sql script to include all tables in
one TRUNCATE statement that have foreign-key references to geonames and
country tables.

Refactored geonames.sh to update_geonames_data.sh

Renamed geonames.sh to update_geonames_data.sh and moved many of the SQL
statements from the bash script into supporting update and truncate sql
scripts.
These sql and update_geonames_data.sh scripts now assume all required...