procutil: do not convert return code of signal exit to positive number (API)
The docstring states that "codes from kill are negative", and it doesn't
make sense to make exit/signal code ambiguous.
.. api::
``hook.hook()`` and ``hook.runhooks()`` may return a negative integer
to denote that the process was killed by signal.
#require test-repo jshint hg10
$ . "$TESTDIR/helpers-testrepo.sh"
run jshint on all tracked files ending in .js except vendored dependencies
$ cd "`dirname "$TESTDIR"`"
$ testrepohg locate 'set:**.js' \
> 2>/dev/null \
> | xargs jshint