Changes since 1.0.17:
* Many portability fixes. Tarsnap should now build and run on
  FreeBSD, Linux (success has been reported on Debian, Ubuntu,
  CentOS, Slackware, Gentoo, and RedHat), OS X, NetBSD, OpenBSD,
  and OpenSolaris. Thanks to "Triskelios" (IRC nick), "WEiRDJE"
  (IRC nick), Thomas Hurst, and Justin Haynes for their help with
  testing and fixing portability issues.
* Minor bugfixes (mostly harmless).