Merge from trunk r75937

* fixed a lot of wchar_t errors
* Optimizations for boost::containers::basic_string
* More tests

[SVN r76062]

test/lexical_cast_vc8_bug_test.cpp

@@ -60,7 +60,7 @@ void test_vc8_bug()
 
 unit_test::test_suite *init_unit_test_suite(int, char *[])
 {
-    unit_test_framework::test_suite *suite =
+    unit_test::test_suite *suite =
         BOOST_TEST_SUITE("lexical_cast vc8 bug unit test");
     suite->add(BOOST_TEST_CASE(test_vc8_bug));
     return suite;