* configure: Regenerated.

* stamp-vti: Ditto.
* version-client.texi: Ditto.
* version.texi: Ditto.

duplicate test names.

* configure.in (AC_PREREQ): 2.57.

* aclocal.m4: Regenerated.
* configure: Ditto.

when they are newer than the selected version.
* acx_extract_cpp_defn.m4: New file.
* asx_version_compare.m4: Ditto.

* NEWS: Ditto.

* Makefile.in: Regenerated.
* aclocal.m4: Ditto.
* config.h.in: Ditto.
* configure: Ditto.

* aclocal.m4: Regenerated.
* configure: Ditto.

* system.h: Include unlocked-io.h.
* Makefile.am (libcvs_a_SOURCES): Add unlocked-io.h.

* Makefile.in: Regenerated.

* config.h.in: Regenerated.
* configure: Ditto.
* aclocal.m4: Ditto.

* system.h (HAVE_REALLOC, CVS_REALLOC): Add support for realloc.c.

* configure.in: Ditto.

need to be trailing-slash-safe.

trailing slash bug.

* NEWS: Ditto.  Reorder NEWS items to put the stuff which it is likely
that only developers care about last.
* configure: Regenerated with Autoconf 2.57.

(Patch from Kenneth Lorber <keni@his.com>.)

fixed a few commits back.

* Makefile.am: Macro substitution for "zlib" subdir.
(Original patch from Anthon Pang <apang@telus.net>.)

* TODO (230): Add note about possible improvements to
ACX_WITH_EXTERNAL_ZLIB.
* aclocal.m4: Regenerated
* config.h.in: Ditto
* configure: Ditto
* Makefile.in: Ditto

location
* zlib.c: #ifdef inclusion of <zlib.h> versus "zlib.h"
(Original patch from Anthon Pang <apang@telus.net>.)

* Makefile.in: Regenerated

ACX_WITH_SYSTEM_VLIB function to use the system's installed version of
zlib library.
(Original patch from Anthon Pang <apang@telus.net>.)

* Makefile.am (EXTRA_DIST): Add new file.
* Makefile.in: Regenerated.

* Makefile.in: Regenerated.

CVS_MALLOC & CVS_REALLOC.

* subr.c: s/malloc/CVS_MALLOC/;s/realloc/CVS_REALLOC/.

* aclocal: Regenerated.
* configure: Ditto.
* config.h.in: Ditto.

* malloc.m4: New file from <https://savannah.gnu.org/projects/gnulib>.

* Makefile.in: Regenerated.

m4/Makefile to AC_OUTPUT.

* aclocal: Regenerated.
* configure: Ditto.
* config.h.in: Ditto.