Update libz to the HEAD of the develop branch

This mostly moves from K&R prototypes to ANSI prototypes and includes a
handful of bug fixes that are nice to have. The corresponding sys commit
will al

Update libz to the HEAD of the develop branch

This mostly moves from K&R prototypes to ANSI prototypes and includes a
handful of bug fixes that are nice to have. The corresponding sys commit
will allow us to undo some hacks that jca applied to make the kernel build
with clang 15.

discussed with deraadt

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Drop RCS ids in upstream zlib source

We're not maintaining a this as a fork, it's upstream source with a handful
of patches. Thus, the RCS ids aren't particularly useful or important. They
are a bit

Drop RCS ids in upstream zlib source

We're not maintaining a this as a fork, it's upstream source with a handful
of patches. Thus, the RCS ids aren't particularly useful or important. They
are a bit of a maintenance burden and generate noise in diffs.

ok kn, no objection millert, "kill" guess who

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Update libz to zlib 1.2.11 and reapply local patches as far as this
made sense.

Tested in snaps for a few days. deraadt helped with fitting things on
floppies and jmatthew found a bug I introduced.

Update libz to zlib 1.2.11 and reapply local patches as far as this
made sense.

Tested in snaps for a few days. deraadt helped with fitting things on
floppies and jmatthew found a bug I introduced.

ok deraadt

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