Perl 5.10.1

Document error "Smart matching a non-overloaded object breaks encapsulation"

That error was added in e67b97bd974194ad616acbb7813c5631aacd6be7

(cherry picked from commit 229c18ce2bca758e413c5cf4f86e43dac52f4884)

 pod/perldiag.pod |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)