Dima's updates a couple of years ago switched PDL's barf to use a stack trace,
at least in PDL::Core. This becomes a problem for some functions that re-barf.
This minor patch to Core.pm.PL udpates the barfing behavior to use croak where
appropriate.

It also changes the definition of PDL::Core::barf to goto() Carp::confess
instead of simply calling it. The latter behavior resulted in an erroneous line
at the top of the stack trace pointing (uselessly) to the definition of
PDL::Core::barf.

With perl-5.16 a deprecation warning was being emitted in
relation to a "defined(@array)".
At line 4416, changed:
if (defined(@{$self->{_env_options}})) {
to
if (@{$self->{_env_options}}) {

Simply changed:
local $SIG{BUS} = \&myhandler;
to
local $SIG{BUS} = \&myhandler unless $^O =~ /MSWin32/i;
(Doesn't seem to alter the scope of the 'local' call.)

The previous skip pattern failed because $^O for Dragonfly BSD
is dragonfly (and not something ending with BSD).

TODO skips only work if the test can't cause a SEGFAULT.
When building Inline code, that is always possible.