Issue #16113: integrade SHA-3 (Keccak) patch from http://hg.python.org/sandbox/cheimes
diff --git a/setup.py b/setup.py
index 4cd3204..b030c4d 100644
--- a/setup.py
+++ b/setup.py
@@ -838,6 +838,15 @@
         exts.append( Extension('_sha1', ['sha1module.c'],
                                depends=['hashlib.h']) )
 
+        # SHA-3 (Keccak) module
+        sha3_depends = ['hashlib.h']
+        keccak = os.path.join(os.getcwd(), srcdir, 'Modules', '_sha3',
+                              'keccak')
+        for pattern in ('*.c', '*.h', '*.macros'):
+            sha3_depends.extend(glob(os.path.join(keccak, pattern)))
+        exts.append(Extension("_sha3", ["_sha3/sha3module.c"],
+                              depends=sha3_depends))
+
         # Modules that provide persistent dictionary-like semantics.  You will
         # probably want to arrange for at least one of them to be available on
         # your machine, though none are defined by default because of library