Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
* doc/grep.in.1: Use "-" in copyright year ranges, not \en.
Problem reported by Jim Meyering.
* tests/bre, tests/ere, tests/spencer1-locale:
Prefer re_shell, not re_shell_.
* tests/init.sh (re_shell): New var, which is exported instead of
re_shell_.
Problem reported by Dagobert Michelsen in <http://bugs.gnu.org/16380>.
* tests/bre, tests/ere, tests/spencer1-locale:
Prefer re_shell_ to SHELL, if re_shell_ is set.
* tests/init.sh (re_shell_): Export if it's used.
This adds a rule run at "make check" time to ensure that
test scripts are consistently executable.
This change is not required for "make check", but makes it easier
for people to run scripts manually, but that is discouraged because
doing so makes it easy to omit important variable settings that
are normally provided via TESTS_ENVIRONMENT.
This change also makes each of the existing TESTS executable.
* tests/Makefile.am (check_executable_TESTS): New rule.
(check): Depend on it.
* tests/{all_scripts}: chmod 755.
Prompted by a report from Eric Blake.
