Merge in a few license fixes that I missed before.
https://svn.boost.org/svn/boost/trunk
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r43467 | danieljames | 2008-03-03 12:10:35 +0000 (Mon, 03 Mar 2008) | 2 lines
Tell subversion that date_time.doc is a text file, not a word document.
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r43468 | danieljames | 2008-03-03 12:11:25 +0000 (Mon, 03 Mar 2008) | 1 line
Fix license link in date_time.doc
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r43803 | danieljames | 2008-03-23 13:03:24 +0000 (Sun, 23 Mar 2008) | 1 line
Fix another license link I seem to have missed.
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