Log Message:
Update librsync to 0.9.6: - Required for updated rdiff-backup
    * Large file support fixes.
    * [v]snprintf or _[v]snprintf autoconf replacement function fix.
    * Changed installed include file from rsync.h to librsync.h.
    * Migration to sourceforge for hosting.
    * Rollsum bugfix that produces much smaller deltas.
    * Memory leaks bugfix patches.
    * mdfour bigendian and >512M bugfix, plus optimisations patch.
    * autoconf/automake updates and cleanups for autoconf 2.53.
    * Windows compilation patch, heavily modified.
    * MacOSX compilation patch, modified to autoconf vararg macro fix.
    * Debian package build scripts patch.