perldelta for hexadecimal floats.
perldelta: fix my bad pod
perldelta: document the ExtUtils move to cpan/
perldelta suggested by Module-CoreList
Update Module::CoreList for 5.21.3
Final perldelta change for 5.21.3
Add new release to perlhist
perldelta: cleanup per JHI's comment
Merge branch 'release-5.21.3' into blead