r18727 broke fdisk

[Bernhard Fischer]

vda,

util-linux/fdisk.c: In function 'seek_sector':
util-linux/fdisk.c:641: warning: implicit declaration of function 'lseek64'
util-linux/fdisk.c:641: error: 'off64_t' undeclared (first use in this function)
util-linux/fdisk.c:641: error: (Each undeclared identifier is reported only once
util-linux/fdisk.c:641: error: for each function it appears in.)
util-linux/fdisk.c:641: error: expected ')' before 'secno'
make[2]: *** [util-linux/fdisk.o] Error 1
make[1]: *** [util-linux] Error 2

If LFS is off, then there really is no lseek64. Please revert.