Added boost-wide <limits> woraround

[SVN r9688]

static_assert_example_3.cpp

@@ -7,7 +7,7 @@
 //  See http://www.boost.org for most recent version including documentation.
 
 #include <climits>
-#include <limits>
+#include <boost/limits.hpp>
 #include <boost/static_assert.hpp>
 
 template <class UnsignedInt>

static_assert_test_fail_7.cpp

@@ -7,7 +7,7 @@
 //  See http://www.boost.org for most recent version including documentation.
 
 #include <climits>
-#include <limits>
+#include <boost/limits.hpp>
 #include <boost/static_assert.hpp>
 
 template <class UnsignedInt>

static_assert_test_fail_9.cpp

@@ -7,7 +7,7 @@
 //  See http://www.boost.org for most recent version including documentation.
 
 #include <climits>
-#include <limits>
+#include <boost/limits.hpp>
 #include <boost/static_assert.hpp>
 
 template <class UnsignedInt>