Update Date::Tie from 0.18 to 0.20
Update Perl DBI cfg to use aca_tstdb test database
Add JSON (perl) 2.53
Add source build for Perl 5.8.9
Update ska perl scripts to call built perl
Change perl module building to use built perl
Update DBD::SQLite from 1.14 to 1.37
Use a symlink to system perl if needed

Create a symlink from ${prefix_arch}/bin/perl to /usr/bin/perl if
there is no ${prefix_arch}/bin/perl.  This allows library builds that
use whatever perl is in the path (glib) to work even if the
${prefix}/bin/perl wrapper (which calls ${prefix_arch}/bin/perl)
is in the path.
Use gfortran on new pgplot builds

gfortran seems to be the better choice and new versions (> 4.3) even make the
GIF driver.
Update PGPLOT (perl) build to match pgplot compiler choice

Specifically, only override the makefile to use g77 in the CentOS 5
64-bit case.  The ExtUtils::F77 default of gfortran is OK on other
systems.
Use a patched version of PDL 2.4.4

This patched version just includes Diab's fix in t/flexraw.t to always
use -frecord-marker=4 on gfortran in the test.  gfortran 4.2 defaults
to 4.  The default for gfortran < 4.2 is system-dependent and was 8 on
the i686 build machine.
Add expat-2.1.0

Also override XML::Parser building to find SKA libexpat
Remove taint test in IPC::System::Simple build

This seems to fail with a relocatable perl setup.
Update sherpaX libgfortran link hack for 64-bit CentOS-6

On CentOS 6, to point to the default gfortran library, the
${prefix_arch}/lib/libgfortran.so link should point to
libgfortran.so.3.  A link to the old libgfortran.so.1 in
${prefix_arch}/lib on these systems will also break pgplot.
Move DBD::mysql install to perl_dbi.cfg
Add mysql headers and library

Did not install these on original DBD::mysql addition as the libraries
were on the CentOS 5 build system.  They weren't on the CentOS 6 build
system so it was easiest just to add them to Ska.
Add Pod::Usage 1.61
Install xpa tools from pyds9 install
Add preliminary 0.16 test report
Add Bit::Vector 7.2 for splat.pl

Also add Carp::Clan 6.04, a Bit::Vector dependency.