Added obligatory copyright notices from HP and SGI.

<ol>

  <li><a href="#cautionarynote">A Cautionary Note</a>

  <li><a href="#instructions">Instructions</a>

  <li><a href="#license">License Information</a>

</ol>

<div class="doc_text">    

</ol>

</div>

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<div class="doc_section">

  <a name="license">License Information</a>

</div>

<div class="doc_text">

<p>

The LLVM GCC frontend is licensed to you under the GNU General Public License

and the GNU Lesser General Public License.  Please see the files COPYING and

COPYING.LIB for more details.

</p>

<p>

The software also has the following additional copyrights:

</p>

<pre>

Copyright (c) 1994

Hewlett-Packard Company

Permission to use, copy, modify, distribute and sell this software

and its documentation for any purpose is hereby granted without fee,

provided that the above copyright notice appear in all copies and

that both that copyright notice and this permission notice appear

in supporting documentation.  Hewlett-Packard Company makes no

representations about the suitability of this software for any

purpose.  It is provided "as is" without express or implied warranty.

Copyright (c) 1996, 1997, 1998, 1999

Silicon Graphics Computer Systems, Inc.

Permission to use, copy, modify, distribute and sell this software

and its documentation for any purpose is hereby granted without fee,

provided that the above copyright notice appear in all copies and

that both that copyright notice and this permission notice appear

in supporting documentation.  Silicon Graphics makes no

representations about the suitability of this software for any

purpose.  It is provided "as is" without express or implied warranty.

</pre>

</div>

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