lib/sh/util.sh: split_lines(): usage: matched up and synced different syntaxes

bugfix: lib/sh/util.sh: log_msg!(): split_lines does not support being invoked by wrapper; need to use `declare lines; wrapper "split_lines" str` instead

fix: lib/sh/util.sh: split_lines(): usage: documented different syntax for when using wrapper

bugfix: lib/sh/util.sh: die_error_hidden(): echo_func to assist debugging

bugfix: lib/sh/util.sh: split(): need to limit the effects of IFS to just the splitting, so it doesn't cause strange errors in other functions

bugfix: stderr2stdout(): fd 2 must be redirected back to fd 2, not log-filtered, in case there are other errors in addition to the benign error. this fixes a bug in pg_schema_exists(), where errors about the DB being down were not displayed because they were log-filtered out.

lib/sh/make.sh: set_make_vars: don't display make vars at verbosity 2 to avoid clutter

bugfix: lib/sh/make.sh: begin_target: don't echo_func twice

inputs/GBIF/_MySQL/.rsync_ignore: added GBIFPortalDB-*.data.sql.gz, because these are intermediate files

bugfix: /Makefile: $(pg_ctl-Darwin): need to call the command rather than echoing it, as is needed for the Linux version