Update p5-Proc-Fork to 0.802.

Changes from previsou:
----------------------
=head2 0.802 (2013-01-24)

=over 4

=item * Simplified internals further still.

No monkeying with C<bless>, also dropped dependencies on Object::Tiny::Lvalue and Scalar::Util.

=back

=head2 0.801 (2013-01-03)

=over 4

=item * No functional changes.

Figured out how to add the credit to Eric Roode for the docs back into the POD under Pod::Weaver.

=back

=head2 0.800 (2013-01-02)

=over 4

=item * Completely rewrote and simplified internals.
All operation and error checking is now in a single function.