- zap heuristic#3, not critical
- don't rebuild the Fetch queue all the time, it's too expensive
- fix bugs in FetchQueue computation, correctly handle 1 distfile case
- create a quick path thru adjust* that handles only new paths.
- use it during LISTING while fetching files, to make more files available
quicker.
- model distfiles as FDEPENDS, DIST, so that they can get dumped.
- add -v option that dumps a bit more stuff in log files.
with these, dpb will fetch all distfiles in a not too surprising order,
and it won't consume 40% cpu while doing so...
9ba6fb7c5c