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/*/Source/ for new-style datasources: use an actual staging table instead of a metadata-only table, so that metadata values can be stored in the staging table instead of the map.csv (as will be required by new-style import)

bugfix: added no-op inputs/IRMNG/Source/run so inputs/IRMNG/run would have something to invoke for it