Fix AFP_BackupTime byte order

AFP_BackupTime value must be 0x80000000 and all existing defines use
native byte order, not byte swapped.

Signed-off-by: Ralph Boehme <rb@sernet.de>
s4:torture:vfs_fruit: add uintxx defines

In oder to be able to include MacExtensions.h we need uint32 type and
there doesn't seem to be a way includes can pick up
source3/include/includes.h where the types are defined.

Now that we can included MacExtensions.h, drop define of
AFPINFO_STREAM.

Signed-off-by: Ralph Boehme <rb@sernet.de>
s4:torture:vfs_fruit: add test writing Netatalk metadata

Signed-off-by: Ralph Boehme <rb@sernet.de>