Improve ICU support. See http://svn.boost.org/trac/boost/ticket/976

[SVN r37741]

test/regress/test_icu.cpp

@@ -39,8 +39,8 @@ class back_insert_iterator
 {
 private:
    Seq* container;
-   typedef const typename Seq::value_type value_type;
 public:
+   typedef const typename Seq::value_type value_type;
    typedef Seq                  container_type;
    typedef std::output_iterator_tag  iterator_category;
 
@@ -647,3 +647,4 @@ void test_icu(const wchar_t&, const test_invalid_regex_tag&){}
 void test_icu(const wchar_t&, const test_regex_replace_tag&){}
 
 #endif
+