• maildrop: fixed a crash in mailbot's -c option
In the courier release, an additional change that was already released in
the maildrop tree:
• In delivery mode, preserve LANG, LANGUAGE, and LC_* environment variables
from the parent.
Other courier changes:
• Invoke external commands from .courier files using the environment
variables that were set in Courier's startup configuration, instead of a
completely empty environment.
• An option to disable tarpitting.