Release Notes: Multiple include file problems were fixed on Mac OS X, Win32, and GCC 4.7. Authentication support was added to HTTPSocket and Utility URL parser. clang can now be used with the environment variable 'USE_CLANG=with_clang'. Support for certificate chains in TCP sockets was added. An uninitialized variable bug in UdpSocket was fixed. The extra 'Xml' namespace was removed from libxml2 wrapper classes.