2 - bug with discovery of initial window size in certain cases
3 (reported by Sean Dorward)
6 - wrote new venti library; server uses it and runs
7 - need way to mount vacs. have all the code for a /vac file
8 system (e.g., cd /vac/68b329da9893e34099c7d8ad5cb9c940da9393e3)
9 but need to put it together.
10 - need to buffer writes sensibly in server. have plan, need to implement.
13 - have a dump file system that sits on the side of ffs,
14 backing up disk images to venti. a loopback NFS server
15 serves the backed-up images.
16 needs cleanup and release. should be easy to add ext2,
17 fat. ntfs harder but possible.
21 - need to use MAKECONTEXT_V2_SOURCE for SunOS 5.10 (and can for 5.9),
22 but must not for 5.8. (reported by Axel Belinfante)
24 - libdraw _x.black and _x.white can go away.
26 - don't mess with signal mask unless asked.
