Add libipc-system-simple-perl to Build-Depends and Depends, required
for Fatalized/autodying system()/exec().
Change-Id: I9342b8ca6eb8c6261079c6295e194aab40cb69de
Usage of ${perl:Depends} as documented at
http://www.debian.org/doc/packaging-manuals/perl-policy/ch-module_packages.html#s-module_deps
is misleading: it's *not* about perl module dependencies, but
instead:
| The program will look at Perl scripts and modules in your package, and will use this
| information to generate a dependency on perl or perlapi.
So we've to hardcode the list of Debian packages we
require for runtime.