Auto merge of #34599 - cuviper:unicode-9.0, r=alexcrichton

Update Unicode tables to 9.0

I just updated `unicode.py`'s generated copyright year, then ran it.

Author: bors

src/etc/unicode.py

@@ -28,7 +28,7 @@
 bytes_old = 0
 bytes_new = 0
 
-preamble = '''// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+preamble = '''// Copyright 2012-2016 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //