Update xen dependency in options.mk from 4.1 to 4.2
since 4.1 is no longer in pkgsrc.
Make the build not fail when PKGSRC_RUN_TEST=yes.
Upstream changes since 1.40:
If the VMM exits unexpectedly while running the ATF tests or some
other shell command, log the exit status and the signal that caused it
to exit (if any).
Log the qemu version used to stdout.
Fix reference to uninitialized variable when reporting a
timeout waiting for VM halt confirmation.
Increase default child timeout from 300 to 600 seconds
to support VMMs where power-up takes a long time.
Increase child.delayafterclose and child.delayafterterminate
to support VMMs where power-down takes a long time.
Run more network diagnostics after failed network installs.
Add timestamps to structured log output.
Before, anita depended on qemu0 or qemu. Now, it has options for
qemu-0, qemu (currently 2) and xen (currently 4.1). By default, all
are off because all of them are quite large and they need only be
present at run time.
Discussed with gson@, who did not object.
