Adds unmodified source files from golang.org.

third_party/golang/LICENSE

Index: third_party/golang/LICENSE
diff --git a/third_party/tcmalloc/vendor/COPYING b/third_party/golang/LICENSE
similarity index 83%
copy from third_party/tcmalloc/vendor/COPYING
copy to third_party/golang/LICENSE
index e4956cfd9fd57aae1200504f1cbc626fa109abeb..0f2498b1939f6c0b0a5589abbe986dd4de83705c 100644
--- a/third_party/tcmalloc/vendor/COPYING
+++ b/third_party/golang/LICENSE
@@ -1,17 +1,16 @@
-Copyright (c) 2005, Google Inc.
-All rights reserved.
+Copyright (c) 2012 The Go Authors. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:
 
-    * Redistributions of source code must retain the above copyright
+   * Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
+   * Redistributions in binary form must reproduce the above
 copyright notice, this list of conditions and the following disclaimer
 in the documentation and/or other materials provided with the
 distribution.
-    * Neither the name of Google Inc. nor the names of its
+   * Neither the name of Google Inc. nor the names of its
 contributors may be used to endorse or promote products derived from
 this software without specific prior written permission.
 
@@ -25,4 +24,4 @@ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.