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).

inputs/SpeciesLink/: switched to new-style import, using the steps at wiki.vegpath.org/Adding_new-style_import_to_a_datasource

inputs/SpeciesLink/Specimen/: translated multi-column filters to postprocessing derived columns, using the steps at wiki.vegpath.org/Adding_new-style_import_to_a_datasource#Translating-filters-to-postprocessing-derived-columns

bugfix: inputs/*/*/postprocess.sql: made all operations idempotent, so that postprocess.sql can be run repeatedly (e.g. by new-style import)

inputs/*/*/postprocess.sql: Remove institutions that we have direct data for: query to obtain list: updated for current schema

Added inputs/SpeciesLink/Specimen/postprocess.sql to remove institutions that we have direct data for