Revision 1680528

On the fsx-1.10 branch:
Don't FSYNC changes to FSX txn properties.  FSYNC future revprops
only after their final contents has been written.  This is how we
already treat the revision file data.

* subversion/libsvn_fs_x/transaction.c
  (set_txn_proplist): Don't FSYNC any txn prop change.
  (commit_body): Flush the revprop contents here.