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/: added family_homonym_epithet, genus_homonym_epithet lookup tables, which use util.all_same() to filter out internal Plantae homonyms
bugfix: inputs/IRMNG/import_order.txt: need to specify order so that Source is first
added inputs/IRMNG/, including runscripts to download the names. this is now the 2nd datasource after GBIF to use runscripts, and the 3rd after FIA/GBIF to use new-style import.