QPID-4095: New boost filesystem support. This commit removes the requirement for Boost filesystem in Windows.
The code in FileSysDir that used Boost is rewritten to use simple windows native calls instead.

Now Boost filesystem is not used at all. All references in CMakeLists.txt are removed.


git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1435326 13f79535-47bb-0310-9956-ffa450edef68