autotools: update automake (1.14), autoconf (2.69); Add *_aarch64_* (ARMv8) support

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
autotools: add Gettext (autopoint)

In order to regenerate autoconf scripts we might need autopoint, i.e.,
Gettext. On some systems in might not be installed by default.

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
autotools: Gettext disable ACL

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
autotools: Perl must be on /usr/bin/perl

LSF-GLIBC package at CERN installs Perl symlink (/bin/perl) pointing
to /usr/bin/perl. All machines by default have Perl on /usr/bin/perl
(incl. Darwin). /bin/perl ends up the first in PATH, thus packages
assume Perl is installed under /bin/perl causing breakage on machines
without LSF-GLIBC.

Always set perl to /usr/bin/perl to avoid issues.

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
autotools: use /usr/bin/perl in shebang

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
Added the following parameters to xz.spec:

  --disable-nls
  --disable-rpath
  --disable-dependency-tracking
  --disable-doc
Merge pull request #814 from nclopezo/fix-for-xz-slc5

Add davidlt's fixes to autotools to make xz work in slc5