leek: if lseek syscall is not available, use lseek64 even for !LFS
leek: if lseek syscall is not available, use lseek64 even for !LFS

With Busybox and uClibc - both built w/o LFS, this caused ash to be
completely broken, as lseek was simply returning error.

Signed-off-by: Vineet Gupta <af669d95a4c0de051445d4cafdbb2c5c4a2838be@synopsys.com>
Cc: Markos Chandras <5cdbcb0e11d2b5ebc39222958c54a1c6329d0c9d@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

foss-xtensa/uClibc,ffainelli/uClibc,majek/uclibc-vx32,kraj/uclibc-ng,ffainelli/uClibc,hjl-tools/uClibc,foss-xtensa/uClibc,hjl-tools/uClibc,wbx-github/uclibc-ng,waweber/uclibc-clang,ddcc/klee-uclibc-0.9.33.2,groundwater/uClibc,wbx-github/uclibc-ng,mephi42/uClibc,ddcc/klee-uclibc-0.9.33.2,foss-xtensa/uClibc,kraj/uClibc,ddcc/klee-uclibc-0.9.33.2,ffainelli/uClibc,wbx-github/uclibc-ng,brgl/uclibc-ng,foss-for-synopsys-dwc-arc-processors/uClibc,brgl/uclibc-ng,hjl-tools/uClibc,groundwater/uClibc,groundwater/uClibc,kraj/uclibc-ng,kraj/uClibc,hjl-tools/uClibc,groundwater/uClibc,wbx-github/uclibc-ng,ffainelli/uClibc,majek/uclibc-vx32,groundwater/uClibc,foss-xtensa/uClibc,majek/uclibc-vx32,kraj/uclibc-ng,foss-for-synopsys-dwc-arc-processors/uClibc,waweber/uclibc-clang,majek/uclibc-vx32,foss-for-synopsys-dwc-arc-processors/uClibc,waweber/uclibc-clang,ddcc/klee-uclibc-0.9.33.2,mephi42/uClibc,kraj/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,hjl-tools/uClibc,kraj/uclibc-ng,brgl/uclibc-ng,brgl/uclibc-ng,waweber/uclibc-clang,kraj/uClibc,mephi42/uClibc,ffainelli/uClibc,mephi42/uClibc