zlib: bump to version 1.3.2

The configure patch was upstreamed.

Add a small patch for gcc 2 to allow the use of vsnprintf.

sys-libs/zlib/patches/zlib-1.3.2.patchset

@@ -0,0 +1,46 @@
+From 127ef0a1eef25a54b251f56e89502a4ed6422b04 Mon Sep 17 00:00:00 2001
+From: Adrien Destugues <pulkomandy@pulkomandy.tk>
+Date: Sun, 28 Aug 2016 18:33:07 +0200
+Subject: zlib: export Haiku shared object symbols
+
+
+diff --git a/zlib.map b/zlib.map
+index 7a9100f..4182423 100644
+--- a/zlib.map
++++ b/zlib.map
+@@ -6,6 +6,7 @@ ZLIB_1.2.0 {
+     inflateBackEnd;
+     inflateBackInit_;
+     inflateCopy;
++    _gSharedObjectHaiku*;
+   local:
+     deflate_copyright;
+     inflate_copyright;
+-- 
+2.52.0
+
+
+From ef48b2ca09ec634dee7ae4fb05374695dcf80dc4 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Joachim=20Mairb=C3=B6ck?= <j.mairboeck@gmail.com>
+Date: Sat, 21 Feb 2026 16:18:01 +0100
+Subject: use vsnprintf also in C89 mode (i.e. with gcc2)
+
+
+diff --git a/gzguts.h b/gzguts.h
+index 266305d..023dab6 100644
+--- a/gzguts.h
++++ b/gzguts.h
+@@ -92,8 +92,8 @@
+ #        define vsnprintf _vsnprintf
+ #      endif
+ #    endif
+-#  elif !defined(__STDC_VERSION__) || __STDC_VERSION__-0 < 199901L
+-/* Otherwise if C89/90, assume no C99 snprintf() or vsnprintf() */
++#  elif !defined(__HAIKU__) && (!defined(__STDC_VERSION__) || __STDC_VERSION__-0 < 199901L)
++/* Otherwise if C89/90, assume no C99 snprintf() or vsnprintf(), except Haiku, which always has them */
+ #    ifndef NO_snprintf
+ #      define NO_snprintf
+ #    endif
+-- 
+2.52.0
+