zlib: sync with src

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

Sync sys libz with base

Update to zlib 1.2.12

Build tests by myself for amd64 and arm64, sthen and inoguchi for i386
and gkoehler for macppc and powerpc64, thanks!

Detailed changelog is part of the committed diff.

Add sizes for free() in zlib

Rebased version of a diff from miod who described it as follows:

This tries to keep diffability against upstream, hence a questionable
choice of the size type for zcfree() - but all sizes should fit in 32
bits anyway.

Since all zcfree routines used in the tree cope with NULL arguments
(including the various alloc.c used by the boot blocks), I have
simplified TRY_FREE to compensate for the growth.

Reminded by and ok mpi

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

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

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

Sync sys libz with base

Update to zlib 1.2.12

Build tests by myself for amd64 and arm64, sthen and inoguchi for i386
and gkoehler for macppc and powerpc64, thanks!

Detailed changelog is part of the committed diff.

Add sizes for free() in zlib

Rebased version of a diff from miod who described it as follows:

This tries to keep diffability against upstream, hence a questionable
choice of the size type for zcfree() - but all sizes should fit in 32
bits anyway.

Since all zcfree routines used in the tree cope with NULL arguments
(including the various alloc.c used by the boot blocks), I have
simplified TRY_FREE to compensate for the growth.

Reminded by and ok mpi

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

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

Sync sys libz with base

Update to zlib 1.2.12

Build tests by myself for amd64 and arm64, sthen and inoguchi for i386
and gkoehler for macppc and powerpc64, thanks!

Detailed changelog is part of the committed diff.

Add sizes for free() in zlib

Rebased version of a diff from miod who described it as follows:

This tries to keep diffability against upstream, hence a questionable
choice of the size type for zcfree() - but all sizes should fit in 32
bits anyway.

Since all zcfree routines used in the tree cope with NULL arguments
(including the various alloc.c used by the boot blocks), I have
simplified TRY_FREE to compensate for the growth.

Reminded by and ok mpi

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

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

Update to zlib 1.2.12

Build tests by myself for amd64 and arm64, sthen and inoguchi for i386
and gkoehler for macppc and powerpc64, thanks!

Detailed changelog is part of the committed diff.

Add sizes for free() in zlib

Rebased version of a diff from miod who described it as follows:

This tries to keep diffability against upstream, hence a questionable
choice of the size type for zcfree() - but all sizes should fit in 32
bits anyway.

Since all zcfree routines used in the tree cope with NULL arguments
(including the various alloc.c used by the boot blocks), I have
simplified TRY_FREE to compensate for the growth.

Reminded by and ok mpi

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

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

Add sizes for free() in zlib

Rebased version of a diff from miod who described it as follows:

This tries to keep diffability against upstream, hence a questionable
choice of the size type for zcfree() - but all sizes should fit in 32
bits anyway.

Since all zcfree routines used in the tree cope with NULL arguments
(including the various alloc.c used by the boot blocks), I have
simplified TRY_FREE to compensate for the growth.

Reminded by and ok mpi

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

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

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

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

Fix warnings when building zlib with ZLIB_CONST defined

Probably not very useful (given the lack of feedback) but feels more
correct. Kernel part tested with option ZLIB_CONST.

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1

Update to zlib 1.2.3; OK deraadt@

zlib-1.21 here too

Fix for DoS caused by incorrect error handling. From Dmitry V. Levin.
ok miller@ henning@

branches: 1.2.2; 1.2.4;
Add #ifdef SMALL and #ifdef SLOW and include sys/unistd.h instead of unistd.h

Update to zlib 1.2.1