Fix build with zlib on MS-Windows.

 configure.ac (LIBZ): Comment on w32 peculiarities regarding LIBZ.

 src/decompress.c [WINDOWSNT]: Include windows.h and w32.h.
 (DEF_ZLIB_FN, LOAD_ZLIB_FN) [WINDOWSNT]: New macros.  Use them to
 define static variables that are pointers to zlib functions to be
 dynamically loaded.
 (init_zlib_functions) [WINDOWSNT]: New function.
 (fn_inflateInit2_, fn_inflate, fn_inflateEnd, fn_inflateInit2):
 New macros.
 (Fdecompress_gzipped_region, unwind_decompress): Use the fn_*
 macros instead of invoking the zlib functions directly.
 (syms_of_decompress): DEFSYM Qzlib_dll.  Staticpro
 Szlib_available_p.

 lisp/term/w32-win.el (dynamic-library-alist): Add DLLs for zlib.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 679b82ba63c..44af7c6b385 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,17 @@
+2013-08-12  Eli Zaretskii  <eliz@gnu.org>
+
+        * decompress.c [WINDOWSNT]: Include windows.h and w32.h.
+        (DEF_ZLIB_FN, LOAD_ZLIB_FN) [WINDOWSNT]: New macros.  Use them to
+        define static variables that are pointers to zlib functions to be
+        dynamically loaded.
+        (init_zlib_functions) [WINDOWSNT]: New function.
+        (fn_inflateInit2_, fn_inflate, fn_inflateEnd, fn_inflateInit2):
+        New macros.
+        (Fdecompress_gzipped_region, unwind_decompress): Use the fn_*
+        macros instead of invoking the zlib functions directly.
+        (syms_of_decompress): DEFSYM Qzlib_dll.  Staticpro
+        Szlib_available_p.
+
 2013-08-12  Dmitry Antipov  <dmantipov@yandex.ru>
 
         Avoid looping over all frame windows to freeze and unfreeze.