Added support of WindowsLive code page to ActiveSync.

Additional info from here:
http://social.msdn.microsoft.com/Forums/en-US/75562e26-158c-45d3-b114-b2b82928c3a7/undocumented-activesync-codepage?forum=os_exchangeprotocols

https://github.com/schmurfy/libwbxml/issues/1