main/perl-file-sharedir-install: new aport

Install shared files
http://search.cpan.org/dist/File-ShareDir-Install/
(cherry picked from commit 6861ecf094bb7090efa45976e4f945da3faa9a43)
main/perl-plack: security upgrade to 1.0031 (CVE-2014-5269)

fixes #3327