We've never used sigwait() before, and it has some problems on Solaris
10 (a nonconformant prototype by default, and experimentally it didn't
seem to work correctly with _POSIX_PTHREAD_SEMANTICS defined).  Use a
pipe instead.  Make t_daemon.py less chatty on stdout to avoid filling
the pipe buffer.

Use unsigned char for test encodings, since the initializers use
values greater than 127.

The new library libkrad provides code for the parsing of RADIUS packets
as well as client implementation based around libverto.  This library
should be considered unstable.

ticket: 7678 (new)