AX_PRINTF_SIZE_T: initial version

See <http://savannah.gnu.org/patch/?7787> for further details.
AX_PROG_RUBY_VERSION: updated documentation

Replace mention of deprecated AX_WITH_RUBY with example use of AX_WITH_PROG.
Replace the obsolete AC_FD_CC macro with AS_MESSAGE_LOG_FD.

See <http://savannah.gnu.org/patch/?7793> for further details.
AC_REQUIRE AX_APPEND_FLAG when appropriate.

A bunch of m4 files use AX_APPEND_FLAG, but don't AC_REQUIRE, which
can lead to runtime errors instead of compile time errors when the
macro is missing.
AX_CHECK_ZLIB: the current version only looks for zlib if --with-zlib
was provided [by user]. This patch changes that so the search and test
are also performed in default mode.
AX_CHECK_ZLIB: extend the interface to the typical ([action-if-found],
[action-if-not-found])-style, so user can define how macro should behave
when macro is successful or failed. If not provided the macro will
behave as previously. I also clarified in DESCRIPTION what this
behaviour is.
AX_CHECK_ZLIB: fix help output so it is inline with other macros that uses AS_HELP_STRING.
AX_CHECK_ZLIB: change the behavior so macro proceeds to compile and link
tests even if zlib.h was not found in the "usual locations". If end-user
has provided CPPFLAGS and LDFLAGS as needed for compilation/linking to
succeed, there is no reason to error out.
AX_CHECK_ZLIB: cosmetic indentation fix

Adding some quoting and replacing "test x -a y" with more portable
"test x && test y".
NEWS: update to reflect recent changes
AX_ZONEINFO: find compiled zoneinfo files

See <http://savannah.gnu.org/patch/index.php?7814> for further details.
AX_BOOST_SYSTEM, AX_BOOST_FILESYSTEM: inverse the order of search for libraries

With the original macros, the oldest versioned library is used, but
for most distribution this is detrimental, as the old versions are
kept for compatibility, and not to be linked against. By using tac we
reverse the order of the libraries, preferring an unversioned one
(usually the latest available on the system), and then proceeding in
descending order.

Together with this, also try to simplify the sed syntax. It's of note
that even though tac might not be very portable, the sed syntax used
is also not so portable, so it might be worth working this around in a
different way.

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
AX_CC_MAXOPT: use $enableval, not $withval, in AC_ARG_ENABLE call
AX_CHECK_ZLIB: Fix typo. Assign LDFLAGS correctly in action-if-found.
AX_BLAS: add support for the (free-software, BSD-licensed) OpenBLAS library, a descendant of GotoBLAS (http://xianyi.github.com/OpenBLAS/).

See <http://savannah.gnu.org/patch/?7828> for further details.
AX_CXX_RVALUE_REFERENCES: initial version

See <http://savannah.gnu.org/patch/?7833> for further details.
Use AS_HELP_STRING in ax_check_postgres_db.m4

Signed-off-by: Olivier Mehani <olivier.mehani@nicta.com.au>
Substantial rewrite of AX_CHECK_POSTGRES_DB.

It still behaves the same by default, AC_DEFINing HAVE_LIBPQ and setting
variables PQINCPATH and PQLIBPATH, while erroring when either header or
library is found in the default or specified paths.

The logic is however different, where the specified prefixes and/or
incdir and libdir are temporarily added to CFLAGS and LDFLAGS. The
normal detection logic (AC_CHECK_HEADER and AC_CHECK_LIB) is used next,
only, and once.

In addition, two optional arguments to the macro, ACTION-IF-FOUND and
ACTION-IF-NOT-FOUND are now available to extend the logic. The default
ACTION-IF-FOUND is to do nothing (apart from defining the variables and
substitutions, which is always done). The default ACTION-IF-NOT-FOUND is
to error out; it is replaced by the ACTION-IF-NOT-FOUND if specified
to, e.g., gracefully remove configure PGSQL out when it's only optional.

Bump serial from 5 to 6.

Signed-off-by: Olivier Mehani <olivier.mehani@nicta.com.au>
Add -Idir to CPPFLAGS rather than CFLAGS

Signed-off-by: Olivier Mehani <olivier.mehani@nicta.com.au>
AX_CHECK_POSTGRES_DB: version bump and cosmetic