Fix the non-standard behaviour when not1, etc called with a function that was identified by Jens Maurer using Comeau C++.

[SVN r8292]

libs/functional

@@ -1 +1 @@
-Subproject commit 87ebd5808bd0ad237ae3f3a6b974d90e5573f5e4
+Subproject commit 0fad7f15389fbfa8e93f2dc0ba075cee45fcaa45