s3: VFS: fruit: In the fruit handle->fruit_config_data, add a recursion guard we...

s3: VFS: fruit: In the fruit handle->fruit_config_data, add a recursion guard we will set before calling openat_pathref_fsp().

Not yet used.

Same technique as used to prevent recursion in stat calls in vfs_fake_acls.c
This will go away once SMB_VFS_STATX() is added and we can select exactly
what fields we are calling stat() to get.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>