Merge 74928 from ^/trunk

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  r74928 | jhunold | 2011-10-12 19:59:21 +0200 (Mi, 12 Okt 2011) | 1 line
  
  use boost workaround header for clang bug 6907
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[SVN r74946]

libs/numeric/interval

@@ -1 +1 @@
-Subproject commit 4d2d5f764668b2a4baf88cfad39f2e5ff4755212
+Subproject commit e5c11c2c5b80e0776d48ed7653c85dab128169cf