Merge from trunk.

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  r66613 | chris_kohlhoff | 2010-11-17 00:16:45 +1100 (Wed, 17 Nov 2010) | 2 lines
  
  Fixed a Windows-specific problem where failures from accept() are incorrectly treated as successes. Refs #4859.
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[SVN r66620]

libs/asio

@@ -1 +1 @@
-Subproject commit 01c7794612f0ae13def612bef6a2a86ced0cf52b
+Subproject commit 009e6a0c02ffe93678e00f6f31cd2dadd7196e2c