bugfix: inputs/IRMNG/: renamed to inputs/.IRMNG/ so that this comes before TNRS, which depends on it (this is a metadata datasource, so it can start with "."). part of issue #940.
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/IRMNG/_README.TXT: added note that when refreshing this datasource, remember to regenerate the TNRS derived cols using the instructions in inputs/.TNRS/schema.sql > tnrs_populate_fields()