gettextize: Require automake >= 1.9.

gettextize: Require automake >= 1.9.

* gettext-tools/misc/gettextize.in: Signal an error if 'aclocal' from
automake >= 1.9 is not found. Stop installing intldir.m4, intl.m4 and its
dependencies.
* gettext-tools/doc/gettext.texi (mkinstalldirs, aclocal): State the requirement
to have automake >= 1.9.
* gettext-tools/m4/Makefile.am (aclocal_DATA): Don't install codeset.m4,
extern-inline.m4, fcntl-o.m4, glibc2.m4, glibc21.m4, intdiv0.m4, intl.m4,
intl-thread-locale.m4, intldir.m4, intmax.m4, inttypes_h.m4, inttypes-pri.m4,
lcmessage.m4, lock.m4, longlong.m4, printf-posix.m4, size_max.m4, stdint_h.m4,
threadlib.m4, uintmax_t.m4, visibility.m4, wchar_t.m4, wint_t.m4, xsize.m4.
* PACKAGING: Remove the *.m4 files that are no longer installed.