Merged revisions 46655 via svnmerge from

https://svn.boost.org/svn/boost/trunk

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  r46655 | eric_niebler | 2008-06-24 09:24:50 -0700 (Tue, 24 Jun 2008) | 1 line
  
  regex iterators hold ref count to regex impl, fixes #1990
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[SVN r46656]

libs/xpressive

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-Subproject commit 1cc0d6798e55a61ab31624877d68f0d5cc8260e6
+Subproject commit b4e0e260ab8135c9a029b92bd7fad80245abd71f