perldelta for 64ff300b/#122669
perldelta for 7bdb4ff09
perldelta for a14c24d0
perldelta for 7950e9cf3
perldelta: Move a bug fix

to the bug fix section.  Oops.
perldelta: Move compile-time const deref checking

This is a change in behaviour, so it should be more prominent than the
bug fixes, but it is not a backward-incompatible change (some code no
longer dies that used to), nor it is really a new feature.  Putting it
in Diagnostics is the best I can come up with.
perldelta for 7950e9cf39