Merged revisions 50603 via svnmerge from

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

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  r50603 | eric_niebler | 2009-01-14 21:32:33 -0800 (Wed, 14 Jan 2009) | 1 line
  
  work-around for msvc overload resolution bug
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[SVN r50615]

libs/proto

@@ -1 +1 @@
-Subproject commit c9dd9f41e0dd79fb1ca8cd9cf33f166740c84122
+Subproject commit e51953e9a2968162daf8f98981c13552205e353f