Patch to fix a typo

[Tom Tromey]

This fixes a typo I noticed.

Ordinarily I would just check this in as obvious, but I wasn't sure
whether there was some additional process for modifications to the
docs.  Is there something?  Or is this ok as-is?

Tom

2008-12-05  Tom Tromey  <tromey@redhat.com>

	* include/tr1_impl/functional (_Mu): Fix typo.

Index: include/tr1_impl/functional
===================================================================
--- include/tr1_impl/functional	(revision 142487)
+++ include/tr1_impl/functional	(working copy)
@@ -943,7 +943,7 @@
    *  function object [TR1 3.6.3/5]. Only the first parameter should
    *  be specified: the rest are used to determine among the various
    *  implementations. Note that, although this class is a function
-   *  object, isn't not entirely normal because it takes only two
+   *  object, it isn't entirely normal because it takes only two
    *  parameters regardless of the number of parameters passed to the
    *  bind expression. The first parameter is the bound argument and
    *  the second parameter is a tuple containing references to the