Upgrade ntvfs_map_*info to ntvfs_map_async_setup/ntvfs_map_async_finish
ntvfs_map_fsinfo, ntvfs_map_qpathinfo, ntvfs_map_qfileinfo used an
old synchronous mapping technique, acceptable on the grounds that
they were only used by the simple vfs which was synchronous.
Other vfs may/do use these functions, and by upgrading them to use the
ntvfs_map_async_setup/ntvfs_map_async_finish framework, they can now be
used asynchronously.
Signed-off-by: Sam Liddicott <sam@liddicott.com>
Signed-off-by: Stefan Metzmacher <metze@samba.org>