fix: lib/runscripts/file.pg.sql.run: removed include of in_datasrc_dir.run, because this location does not apply to all .sql export scripts
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).
added lib/runscripts/schema.pg.sql.run and use it in inputs/.TNRS/schema.sql.run
inputs/.TNRS/schema.sql.run: export_(): added usage
added inputs/.TNRS/schema.sql.run, which syncs schema.sql with the DB