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/CTFS/: Moved source files into new _src/ subdir to avoid cluttering up the main dir
inputs: Move src subdir into main dir, using the steps at <https://projects.nceas.ucsb.edu/nceas/projects/bien/wiki/VegCSV_subfolders#Move-src-subdir-into-main-dir>
Added inputs/CTFS/src/bci_01April2011.zip.url, which contains the original download URL for our copy of the CTFS database