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).

bugfix: bin/pg_dump_limit: support errexit by ignoring the nonzero exit status that grep returns when it doesn't match anything

pg_dump_limit: Also remove CREATE DATABASE statements

Added pg_dump_limit to filter a PostgreSQL DB dump to remove security and schema-setting commands