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).
mappings/root.sh: Changed output column header from Veg+ to VegCore because this is more accurate following the initial automapping
mappings/root.sh: Removed no longer needed $in_root_suffix
mappings/roots/: Merged roots for different tables into one mappings/root.sh for Veg+, which handles all tables' mappings to VegBIEN
Merged DwC (including DwC1) and VegCSV mappings into new Veg+ schema. This involves replacing occurrences of DwC and VegCSV with Veg+ (or sometimes VegCore) everywhere, as described in <https://projects.nceas.ucsb.edu/nceas/projects/bien/wiki/VegCSV-DwC_merging>.
DwC mappings: Removed ':/list/' root (full version: '::[@xmlns:dcterms=http://purl.org/dc/terms/]/list/') from map spreadsheets to simplify the boilerplate in each file. Since intermediate DwC XML files no longer need to be produced for automated tests, these roots are not needed.
Added mappings/roots for use in creating src maps
