[Libguestfs] [PATCH POSSIBLE DATA CORRUPTOR] daemon: Run fsync on block devices after sync (RHBZ#836710).

This is by no means a complete fix for RHBZ#836710, because I haven't completely got to the bottom of this bug yet, but it is an improvement. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw