[Libguestfs] [PATCH nbdkit 00/10] FreeBSD support.

With these patches, a majority of tests pass. The notable things which are still broken: - Because FreeBSD links /home -> /usr/home, $(pwd) gives a different result from realpath(2). Therefore some tests which implicitly rely on (eg) a plugin which calls nbdkit_realpath internally and then checking that path against $(pwd) fail. - Shebangs (#!) don't seem to work the same way under FreeBSD as they do under the Linux kernel. In any case ‘#!/usr/sbin/nbdkit perl’ runs the script under the shell. I didn't investigate why so far. - You have to use GNU make (gmake). BSD make gets very confused by automake Makefiles. I don't know if it's something we're doing wrong or if it's just not supposed to work. Rich.