constructions that parse out to [ -z "$foo" ] && foo=""
These are bad examples that get copied and pasted into new code, so the
hope is that with less bad examples there will be less need for me to
bring this up in review.
In a few of these files all that were changed were comments so that next
time I search for these patterns I won't trip on the file for no reason.
In a few places, add $FreeBSD$
No functional changes, so no PORTREVISION bumps
1. Change default variable assignments at the top to comments (two of
them were assigning empty default values).
2. Move the default for _enable to below load_rc_config
3. Add the _ifaces and _server options to command_args which eliminates
the need for the precmd
4. s#/usr/local#%%PREFIX%%#
We have not checked for this KEYWORD for a long time now, so this
is a complete noop, and thus no PORTREVISION bump. Removing it at
this point is mostly for pedantic reasons, and partly to avoid
perpetuating this anachronism by copy and paste to future scripts.
