Prepare for release of 4.5.13.

* configure.ac: Change the version number to 4.5.13.
* NEWS: Mention some documentation bug fixes which have been
applied (ChangeLog entries already exist for these).  Change the
version number of the top section of the NEWS file.
Update the version number following the recent release.

* configure.ac: Move on from 4.5.13.
* NEWS: Move on from 4.5.13.
Fix bug #42793: "Failed to write output" with -ls.

* lib/listfile.c (print_name_with_quoting): Avoid using the
variable fprintf_result before it is initialised.  I hope this
fixes Savannah bug #42793.
Bug #42793: mention the bugfix in NEWS.

* NEWS: mention the bugfix.
Did 'make dist'
Standardize on "initialize".

* find/exec.c (initialise_wd_for_exec): rename to
initialize_wd_for_exec, since "initialize" is the preferred form
even in UK spelling (the OED says "initialise" is a variant).
Update callers (it's a static function).  Update spelling in
comments.
* find/find.c (main): Fix missing "to" in error message and update
"initialise" to "initialize".  Update comment too.
* find/ftsfind.c (main): Update spelling in error message.
* lib/listfile.c (print_name_with_quoting): spelling change in
comment.
* find/tree.c (init_pred_perf): Likewise.
* lib/extendbuf.c (extendbuf): Likewise.
* lib/splitstring.h: Likewise.
* find/print.c (format_date): Likewise.
* doc/find-maint.texi (Tools): Update spelling.
Release findutils-4.5.14.

* configure.ac: Update version number to 4.5.14.
* NEWS: Likewise, and add today's date.
* po/*: Update with 'make dist'.