Remove compiler workarounds no longer needed due to BOOST_STATIC_ASSERT fix. For stylistic reasons, change sizeof() test to sizeof() != 0

[SVN r10236]

libs/utility

@@ -1 +1 @@
-Subproject commit 1bb1898ab96f96e30f88ae536bb5a6f50fd82296
+Subproject commit 43f525298ed7a02289a82222f5d57eed3cd61fdb