Redirect stdout/stderr through the logging system. This change also causes the uncaptured output of subprocesses to be routed to the logging system for recording in the session transcript.

# Directions for web crawlers.
# See http://www.robotstxt.org/wc/norobots.html.

User-agent: HTTrack
User-agent: puf
User-agent: MSIECrawler
User-agent: Nutch
Disallow: /