/README.TXT: calls to `inputs/run postprocess`: direct user to refer to inputs/run for this, so the runtime doesn't have to be updated in multiple places

inputs/run: postprocess(): updated runtime (20 min)

/README.TXT: Schema changes: added steps to update staging table column names on the local machine and vegbiendev

fix: schemas/VegCore/mk_derived: added `EOF` at end to avoid (benign) "here-document delimited by end-of-file" warnings on Linux

mappings/VegCore.htm: regenerated from wiki: rename specimenHolderInstitutions to specimen_duplicate_institutions, as decided in the 2014-03-13 conference call (wiki.vegpath.org/2014-03-13_conference_call#schema-changes-2). note that most schema changes (such as this one) involve mappings changes, which are handled automatically by `inputs/run postprocess; yes|make inputs/{NVS,SALVIAS,TEAM}/test`.

bugfix: lib/runscripts/table.run: schema/make calls: need to use `make schema` instead because old-style datasources don't have a top-level runscript (the absence of this identifies them as old-style so inputs/input.Makefile works correctly)

/README.TXT: Maintenance: VegCore data dictionary: `make inputs/{NVS,SALVIAS,TEAM}/test`: recorded runtime (30 s)

/README.TXT: Maintenance: VegCore data dictionary: `make inputs/{NVS,SALVIAS,TEAM}/test`: prepended `time` to enable obtaining the runtime

/README.TXT: Maintenance: VegCore data dictionary: `inputs/run postprocess`: updated runtime (20 min)

fix: schemas/util.sql: trim(): by default, cascadingly drop dependent columns so that they don't prevent trim() from succeeding. note that this requires the dependent columns to then be manually re-created.