Rotate test

[Christopher Jefferson]

This patch adds a new test for rotate, which much more carefully  
checks various corner cases. It doesn't reveal any bugs in either  
current, or future patches, but it makes me much more comfortable they  
work correctly!

Chris

////
2009-10-07  Chris Jefferson  <chris@bubblescope.net>

	* testsuite/25_algorithms/rotate/moveable2.cc: New.



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