Hello automakers.

While teststing the `testsuite-work' branch on NetBSD 5, I've encountered
a weird failure in the test `parallel-tests3.test', which actually caused
the whole testsuite to crash (!) due to a stray SIGTERM.

I've reduced the failure to the attached testcase, which expose the bug
also for the older automake release 1.11.1.

Note that, on GNU/Linux and Solaris 10, the testcases passes without
problems.

To reproduce from a freshly extracted 1.11.1 tarball, make sure GNU make
is in PATH named as `gmake', then run:
  $ ./configure && make
  $ cd tests
  $ cp /path/to/saved/foo.test .
  $ sh foo.test
  ...
  gmake[2]: Leaving directory `/tmp/automake-1.11.1/tests/foo.dir'
  gmake[1]: Leaving directory `/tmp/automake-1.11.1/tests/foo.dir'
  [2]   Terminated              ${sleep}
  gmake: *** [check-am] Terminated
  + signal=15
  + Exit 1
  + set +e
  [1]   Terminated+               ${MAKE} -j1 checkexit
   1
  + exit 1
  + exit_status=1
  + set +e
  + cd /tmp/automake-1.11.1/tests
  + test 15 != 0
  + echo foo: caught signal 15
  foo: caught signal 15
  + echo foo: exit 1
  foo: exit 1
  + exit 1

Attached are the config.log file and test logs for /bin/sh, /bin/ksh, and
bash 4.1.

Any idea of what's going on?

Regards,
  Stefano