POSIX says that ‘echo FOO’ produces implementation-defined output
if FOO contains leading ‘-’, or ‘\’ anywhere, so don’t assume GNU
behavior in that case.
* Makefile.in (removenullpaths): Remove.
(epaths-force): Rewrite to avoid the need for ‘echo’.
(install-etc): Be clearer about escaping the shell metacharacters
‘\’ and ‘$’.
* Makefile.in (install-arch-indep, install-etcdoc):
* admin/charsets/mapconv, admin/merge-gnulib, admin/merge-pkg-config:
* admin/quick-install-emacs, build-aux/gitlog-to-emacslog:
* configure.ac, lib-src/rcs2log, make-dist:
* src/Makefile.in (lisp.mk):
Don’t assume ‘echo’ outputs ‘\’ and leading ‘-’ unscathed.
For example, use ‘printf '%s\n' "$foo"’ rather than ‘echo "$foo"’
if $foo can contain arbitrary characters.
* lisp/Makefile.in (TAGS): Use ‘ls’, not ‘echo’, to avoid ‘\’ issues.
* doc/lispref/two-volume.make (vol1.pdf):
* test/etags/make-src/Makefile (web ftp publish):
Use ‘printf’ rather than ‘echo -e’.

Mostly this just changes ` to ' in static text.  Some exceptions:
* INSTALL.REPO: Use curved quotes, as the diagnostic in question
typically does that now.
* admin/quick-install-emacs (TRY, top level):
Use straight quoting in diagnostics.
* src/README: Fix working-directory confusion.

These are dates that admin/update-copyright did not update, or
updated incorrectly.  Also, back out the copyright-date change to
doc/misc/texinfo.tex, as upstream hasn't updated that date yet.

Run admin/update-copyright.

Problem reported by Glenn Morris in
<http://lists.gnu.org/archive/html/emacs-devel/2014-05/msg00277.html>.
Plus, fix some security and filename quoting problems.
* rcs2log (logdir): Prefer mktemp if available.
(logdir, llogdir): Work even if TMPDIR begins with '-' or has spaces.
(output_authors, main awk script): Parse more-recent CVS output format.

These are dates that admin/update-copyright did not update,
or updated incorrectly.