Added test for sequence syntax (to run with and without variadic macro support) and disabled variadic syntax test when variadic macros are not supported.

Updated docs.

[SVN r77078]

test/nesting_seq.cpp

@@ -0,0 +1,28 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/local_function
+
+#include <boost/local_function.hpp>
+#define BOOST_TEST_MODULE TestNestingSeq
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_CASE(test_nesting_seq) {
+    int x = 0;
+
+    void BOOST_LOCAL_FUNCTION( (bind& x) ) {
+        void BOOST_LOCAL_FUNCTION( (bind& x) ) {
+            x++;
+        } BOOST_LOCAL_FUNCTION_NAME(g)
+
+        x--;
+        g();
+    } BOOST_LOCAL_FUNCTION_NAME(f)
+    
+    f();
+
+    BOOST_CHECK(x == 0);
+}
+