Merged revisions 50392 via svnmerge from

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

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  r50392 | eric_niebler | 2008-12-27 17:44:00 -0800 (Sat, 27 Dec 2008) | 1 line
  
  add rolling_window, rolling_count, rolling_sum and rolling_mean
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[SVN r50414]

libs/accumulators

@@ -1 +1 @@
-Subproject commit b8685f0f6bec35797bdfc850bd9dce77d57b972d
+Subproject commit d045f6ca8ea1ec56b04df6c6c7f30ab837a3dd2a