Update LICENSE file

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 This license applies to all parts of V8 that are not externally
 maintained libraries.  The externally maintained libraries used by V8
 are:
 
   - PCRE test suite, located in
     test/mjsunit/third_party/regexp-pcre.js.  This is based on the
     test suite from PCRE-7.3, which is copyrighted by the University
     of Cambridge and Google, Inc.  The copyright notice and license
     are embedded in regexp-pcre.js.
 
   - Layout tests, located in test/mjsunit/third_party.  These are
     based on layout tests from webkit.org which are copyrighted by
     Apple Computer, Inc. and released under a 3-clause BSD license.
 
   - Strongtalk assembler, the basis of the files assembler-arm-inl.h,
     assembler-arm.cc, assembler-arm.h, assembler-ia32-inl.h,
-    assembler-ia32.cc, assembler-ia32.h, assembler.cc and assembler.h.
+    assembler-ia32.cc, assembler-ia32.h, assembler-x64-inl.h,
+    assembler-x64.cc, assembler-x64.h, assembler-mips-inl.h,
+    assembler-mips.cc, assembler-mips.h, assembler.cc and assembler.h.
     This code is copyrighted by Sun Microsystems Inc. and released
     under a 3-clause BSD license.
 
   - Valgrind client API header, located at third_party/valgrind/valgrind.h
     This is release under the BSD license.
 
 These libraries have their own licenses; we recommend you read them,
 as their terms may differ from the terms below.
 
-Copyright 2006-2011, the V8 project authors. All rights reserved.
+Copyright 2006-2012, the V8 project 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
       notice, this list of conditions and the following disclaimer.
     * 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
       contributors may be used to endorse or promote products derived
       from this software without specific prior written permission.
 
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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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