added lib/ints.py with renamings of max()->set_*min*(), min()->set_*max*() for easier understandability of the set-ceiling/set-floor use cases of min()/max()

bin/map: Set default verbosity: by_col: documented that showing all queries is primarily to assist debugging, not profiling

lib/sh/util.sh: logging: named it `log++`

lib/sh/util.sh: logging: verbosities: level 0: documented that log++ also suppresses external command output for full support of cron jobs

lib/sh/util.sh: logging: documented `make` equivalents of the various verbosities, where available. (many of the verbosities, such as level 1, are sorely needed in make to avoid excessive output.)

1. verbosities (and `make` equivalents):
2. 0: just print errors. useful for cron jobs....

lib/sh/util.sh: die_e(): benign errors: increase log_level so that a benign non-zero exit status will only be displayed at debug verbosities (2+) (it is confusing otherwise)

lib/sh/util.sh: try(): always run the command with benign_error=1 so that any die_e() doesn't prematurely indicate that a particular exit status was an error

lib/sh/util.sh: die_e(): support benign errors using $benign_error flag that should be logged as info messages instead of errors

lib/sh/util.sh: die(): documented that msg can't use $() (because it would reset $?)

inputs/bien_web/observation/VegBIEN.csv, unmapped_terms.csv: regenerated