Fix large CT checkpointing: use open64() and friends

Do that by adding -D_FILE_OFFSET_BITS=64 to CFLAGS

Test case:
* create and start a container
* create a large (>2G) file in it
* in container, run a program that
** opens the file
** unlinks it
** sleeps
* run vzctl chkpnt CTID

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
1 file changed