BerkeleyDB

Overhaul of libc Berkeley DB has been committed

First of all, thanks goes to all people who has helped me on this project, especially Pav (portmgr@) who gave it a twist on pointyhat.

It seems that this has taken me almost a month and 20 commits to get into the tree, after the code is ready. At the beginning, the changeset was ~200KB, and I believe it’s not good to just go ahead and commit it in one time, since it makes reviewing hard. Instead, I manually split it into smaller, functional related chunks, and commit it part-by-part.