vegbien.sql: Modified tree cross-link algorithm to add an "ancestor" for this node. This is useful for queries, because you don't have to separately test if the leaf node is the one you're looking for, in addition to that leaf node's ancestors.

README.TXT: Added instructions how to stop all running imports

vegbien.sql: Added namedplace_update_ancestors and plantname_update_ancestors triggers to populate ancestor cross-links in new namedplace_ancestor and plantname_ancestor tables

sql.py: insert() (and try_insert()): Added optional returning param to provide name of an inserted column (usually pkey) to return

env_password: Print Usage message if run without initial "."

Added bin/stop_imports to stop all running imports

import_all: Print Usage message if was run without initial "."

Renamed import-all to import_all to match convention of using underscores

inputs/CTFS: Added remaining non-data src files

Added CTFS data dictionary inputs/CTFS/src/ctfs-comments_worksheet.xls