zlib: Update to zlib-1.2.12

Bring in the following changes

- Fix a deflate bug when using the Z_FIXED strategy that can result in
  out-of-bound accesses.
- Fix a deflate bug when the window is full in deflate_stored().
- Speed up CRC-32 computations by a factor of 1.5 to 3.
- Use the hardware CRC-32 instruction on ARMv8 processors.
- Speed up crc32_combine() with powers of x tables.
- Add crc32_combine_gen() and crc32_combine_op() for fast combines.

Drop two patches that have been applied upstream and regenerate the
remaining two.

Fixes #1708

Signed-off-by: Chris Packham <judge.packham@gmail.com>

packages/zlib/1.2.11/0000-make-check-fail.patch

@@ -1,37 +0,0 @@
-'make check' should return with non-zero status
-
-... if the test fails.
-
----
- Makefile.in |    6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
-
---- a/Makefile.in
-+++ b/Makefile.in
-@@ -91,7 +91,7 @@
- 	  echo '		*** zlib test OK ***'; \
- 	else \
- 	  echo '		*** zlib test FAILED ***'; false; \
--	fi; \
-+	fi
- 	rm -f $$TMPST
- 
- testshared: shared
-@@ -104,7 +104,7 @@
- 	  echo '		*** zlib shared test OK ***'; \
- 	else \
- 	  echo '		*** zlib shared test FAILED ***'; false; \
--	fi; \
-+	fi
- 	rm -f $$TMPSH
- 
- test64: all64
-@@ -113,7 +113,7 @@
- 	  echo '		*** zlib 64-bit test OK ***'; \
- 	else \
- 	  echo '		*** zlib 64-bit test FAILED ***'; false; \
--	fi; \
-+	fi
- 	rm -f $$TMP64
- 
- infcover.o: $(SRCDIR)test/infcover.c $(SRCDIR)zlib.h zconf.h

packages/zlib/1.2.11/0001-no-_wopen-cygwin.patch

@@ -1,25 +0,0 @@
-From a5e814c69315f3b7528418f6a5185c4f8a9dc250 Mon Sep 17 00:00:00 2001
-From: Alexey Neyman <stilor@att.net>
-Date: Wed, 15 Feb 2017 22:36:35 -0800
-Subject: [PATCH] Fix unresolved reference to _wopen on Cygwin
-
-The default Cygwin GCC/glibc do not provide _wopen. This seems to be
-part of Win32API, which is provided by x86-w64-mingw32-gcc - but that
-compiler does not define __CYGWIN__, it defines _WIN32.
-
-Signed-off-by: Alexey Neyman <stilor@att.net>
----
- gzguts.h |    2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/gzguts.h
-+++ b/gzguts.h
-@@ -39,7 +39,7 @@
- #  include <io.h>
- #endif
- 
--#if defined(_WIN32) || defined(__CYGWIN__)
-+#if defined(_WIN32)
- #  define WIDECHAR
- #endif
- 

packages/zlib/1.2.11/chksum

@@ -1,8 +0,0 @@
-md5 zlib-1.2.11.tar.xz 85adef240c5f370b308da8c938951a68
-sha1 zlib-1.2.11.tar.xz e1cb0d5c92da8e9a8c2635dfa249c341dfd00322
-sha256 zlib-1.2.11.tar.xz 4ff941449631ace0d4d203e3483be9dbc9da454084111f97ea0a2114e19bf066
-sha512 zlib-1.2.11.tar.xz b7f50ada138c7f93eb7eb1631efccd1d9f03a5e77b6c13c8b757017b2d462e19d2d3e01c50fad60a4ae1bc86d431f6f94c72c11ff410c25121e571953017cb67
-md5 zlib-1.2.11.tar.gz 1c9f62f0778697a09d36121ead88e08e
-sha1 zlib-1.2.11.tar.gz e6d119755acdf9104d7ba236b1242696940ed6dd
-sha256 zlib-1.2.11.tar.gz c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1
-sha512 zlib-1.2.11.tar.gz 73fd3fff4adeccd4894084c15ddac89890cd10ef105dd5e1835e1e9bbb6a49ff229713bd197d203edfa17c2727700fce65a2a235f07568212d820dca88b528ae

packages/zlib/1.2.12/0000-mingw-static-only.patch

@@ -4,7 +4,7 @@
 
 --- a/win32/Makefile.gcc
 +++ b/win32/Makefile.gcc
-@@ -71,7 +71,11 @@
+@@ -66,7 +66,11 @@
         gzwrite.o infback.o inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o
  OBJA =
  
@@ -17,7 +17,7 @@
  
  test: example.exe minigzip.exe
  	./example
-@@ -125,7 +129,7 @@
+@@ -120,7 +124,7 @@
  .PHONY: install uninstall clean
  
  install: zlib.h zconf.h $(STATICLIB) $(IMPLIB)

packages/zlib/1.2.12/0001-crossbuild-macos-libtool.patch

@@ -23,7 +23,7 @@ Date:   Fri May 22 03:32:33 2020 +0200
  
  # set defaults before processing command line options
  LDCONFIG=${LDCONFIG-"ldconfig"}
-@@ -241,8 +247,8 @@
+@@ -252,8 +258,8 @@
               SHAREDLIBV=libz.$VER$shared_ext
               SHAREDLIBM=libz.$VER1$shared_ext
               LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}

packages/zlib/1.2.12/chksum

@@ -0,0 +1,8 @@
+md5 zlib-1.2.12.tar.xz 28687d676c04e7103bb6ff2b9694c471
+sha1 zlib-1.2.12.tar.xz 37d26cd1138597c866b8e3e137156c82a0f0f960
+sha256 zlib-1.2.12.tar.xz 7db46b8d7726232a621befaab4a1c870f00a90805511c0e0090441dac57def18
+sha512 zlib-1.2.12.tar.xz 12940e81e988f7661da52fa20bdc333314ae86a621fdb748804a20840b065a1d6d984430f2d41f3a057de0effc6ff9bcf42f9ee9510b88219085f59cbbd082bd
+md5 zlib-1.2.12.tar.gz 5fc414a9726be31427b440b434d05f78
+sha1 zlib-1.2.12.tar.gz 207ba741d387e2c1607104cf0bd8cff27deb2605
+sha256 zlib-1.2.12.tar.gz 91844808532e5ce316b3c010929493c0244f3d37593afd6de04f71821d5136d9
+sha512 zlib-1.2.12.tar.gz cc2366fa45d5dfee1f983c8c51515e0cff959b61471e2e8d24350dea22d3f6fcc50723615a911b046ffc95f51ba337d39ae402131a55e6d1541d3b095d6c0a14