* build-aux/git-version-gen: Rather than leaking a "fatal" error
from git and proceeding as if it had succeeded but printed no SHA1
checksums, suppress the diagnostic and handle the failure.
Reported by Bruce Korb in http://marc.info/?l=git&m=129399145930450&w=2
git-version-gen: include command name in one more diagnostic
* build-aux/git-version-gen: When the required .tarball-version file
was missing or unreadable, you might see the diagnostic from "cat",
but no trace of the name of the invoking script. Now, you still see
the diagnostic from cat, but also get one from "git-version-gen: ".
Inspired by a patch from Bruce Korb.
* tests/test-getlogin_r.c (main): Allow an error code EINVAL instead of
ERANGE when the second argument is zero.
* doc/posix-functions/getlogin_r.texi: Document the HP-UX 11
portability problem.