Add Info-ZIP unzip.com

third_party/unzip/unreduce.c

@@ -0,0 +1,36 @@
+// clang-format off
+/*
+  Copyright (c) 1990-2002 Info-ZIP.  All rights reserved.
+
+  See the accompanying file LICENSE, version 2000-Apr-09 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
+*/
+/*---------------------------------------------------------------------------
+
+  unreduce.c
+
+  Copyright-clean dummy module, without any real code.
+
+  If you really need unreduce support, replace this module by the full
+  source code, available as add-on package from our distribution site.
+
+  ---------------------------------------------------------------------------*/
+
+
+#define __UNREDUCE_C    /* identifies this source module */
+#define UNZIP_INTERNAL
+#include "third_party/unzip/unzip.h"      /* defines COPYRIGHT_CLEAN by default */
+
+
+#ifndef COPYRIGHT_CLEAN
+
+ /* This line is indented to hide the #error directive from pure traditional
+  * K&R C preprocessors. These do not recognize the #error directive, but
+  * they also recognize only lines that start with a '#' in column 1 as
+  * preprocessor directives.
+  */
+ #error This dummy-module does not support the unreduce method!
+
+#endif /* !COPYRIGHT_CLEAN */