fatal signal rsync will try to open an xterm running gdb, similarly to
Samba's "panic action" or GNOME's bug-buddy.

previously built into Phil's test was clashing with the runtests.sh
framework.  I think one of the core problems might be that scripts
which don't explicitly "exit 0" have return codes which vary depending
on the particular shell.  (c.f. the autoconf portability guide.)

This might break the Debian test suite but I'm afraid I don't know
enough about how it works yet.  Hopefully eventually it can become
just a wrapper around our 'make check'.

path for manuals, and bumps the version.

front to detect a command that will work properly, and use that
consistently.

Also, in test report, show setting of $preserve_scratch.

Reset version.

actually did not; fix it.

Add "make cleantests"

find a portable shell command that does it.

"nobody".  The existing code kind-of assumes this.