MCE-Shared 1.847

on Perl CPAN

Obsolete RedHat MCE-Shared-1.841-Sereal-deps.patch file. This patch file
is no longer needed and finally resolved with this release.

Updated PDL examples in the documentation including Cookbook on GitHub.
Resolved segmentation fault in global cleanup for shared PDL objects.
Added missing pdl_random class method to MCE::Shared.

Bumped MCE dependency to 1.847.