This commit was manufactured by cvs2svn to create branch 'RC_1_33_0'.

[SVN r30300]
fixed broken links


[SVN r30421]
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[SVN r30490]
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[SVN r30508]
added test for extension mechanism


[SVN r30815]
added discussion on extension mechanism


[SVN r30854]
added remove_const to parameters to avoid common instantiations errors


[SVN r30855]
simplified metafunctions interface


[SVN r30889]
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[SVN r30927]
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[SVN r30988]
Re-enable broken compiler workarounds (they cause regressions if not present).


[SVN r31512]
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[SVN r31520]
Changed - output statement at end of example.  cout << a << b << c; does
          NOT guarantee left to right evaluation.


[SVN r31755]
More cleanups


[SVN r31860]