Update core to CPAN release 0.9909

Includes f57000b PATCH: [perl #121930] Bleadperl breaks MDOOTSON/Wx

(Edited by committer: Pull in $VERSION bumps, which I completely forgot
to do in commit 804a816133(!), but skip the change to vutil.c, which
has already been cherry-picked in commit 3e43966ef8.)
Update version.pm's checksum after the previous commit's $VERSION bump