two issues with cdfs

hi there,

i've tripped over two issues with the cdfs:

1) take a > 4 GB example.file
2) do `mkisofs -iso-level 4 -input-charset ISO-8859-15 -V "Test 1" -o new.iso example.file`
3) mdconfig -a -t vnode -f new.iso
4) mount -t cd9660 /dev/mdX /some/place

the resulting file size is only 3115015779 bytes, although it should be
7409981027 bytes (in my case).

the second issue:

1) take a > 4 GB file
2) do `mkisofs -iso-level 4 -J -r -input-charset ISO-8859-15 -V "Test 2" -o new.iso example.file`
3) mdconfig -a -t vnode -f new.iso
4) mount -t cd9660 /dev/mdX /some/place

there are 2 files with the same indode. the file size is 4294965248 bytes,
although it should be 7409981027 bytes (in my case).

cheers.
alex

ps: i'm running HEAD (r215432; amd64).

-- 
a13x