fix: inputs/IUCN/: renamed to inputs/.IUCN/ (see 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/input.Makefile: SVN: add, %/add: */logs: also svn:ignore *.gz, used for compressed log files

input.Makefile: SVN: add: Add a Source table to store datasource metadata. This adds a Source table to all herbaria which are listed in .herbaria, and therefore didn't previously need a Source table to indicate their referenceType and sampleType.