Update to version 4.3.0
    
    - Drop patches accected upstream or that were previously backported:
      xrootd-selinux.patch, xrootd-pth-cancel.patch, xrootd-link.patch,
      xrootd-c++11.patch, xrootd-doxygen.patch, xrootd-autoptr.patch,
      xrootd-indent.patch, xrootd-throw-dtor.patch and xrootd-sockaddr.patch