Add Info-ZIP unzip.com

third_party/unzip/zip.h

@@ -0,0 +1,26 @@
+// clang-format off
+/*
+  Copyright (c) 1990-2005 Info-ZIP.  All rights reserved.
+
+  See the accompanying file LICENSE, version 2003-May-08 or later
+  (the contents of which are also included in unzip.h) for terms of use.
+  If, for some reason, all these files are missing, the Info-ZIP license
+  also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html
+*/
+/* This is a dummy zip.h to allow the source files shared with Zip
+   (crypt.c, crc32.c, ttyio.c, win32/win32i64.c) to compile for UnZip.
+   (In case you are looking for the Info-ZIP license, please follow
+   the pointers above.)  */
+
+#ifndef __zip_h   /* don't include more than once */
+#define __zip_h
+
+#define UNZIP_INTERNAL
+#include "third_party/unzip/unzip.h"
+
+#define local static
+
+#define ZE_MEM         PK_MEM
+#define ziperr(c, h)   return
+
+#endif /* !__zip_h */