Fix fcntl64 for 64 bit targets.
Fix fcntl64 for 64 bit targets.

64 bit targets often don't have a separate fcntl64() system call, because they don't need one.

Signed-off-by: Rob Landley <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@landley.net>
Signed-off-by: Austin Foxley <65462a1d10372f5df6b6641242ca623823c369f3@cetoncorp.com>

foss-xtensa/uClibc,brgl/uclibc-ng,majek/uclibc-vx32,ndmsystems/uClibc,m-labs/uclibc-lm32,ffainelli/uClibc,czankel/xtensa-uclibc,kraj/uClibc,hjl-tools/uClibc,skristiansson/uClibc-or1k,ndmsystems/uClibc,waweber/uclibc-clang,skristiansson/uClibc-or1k,mephi42/uClibc,m-labs/uclibc-lm32,ysat0/uClibc,waweber/uclibc-clang,ddcc/klee-uclibc-0.9.33.2,hjl-tools/uClibc,majek/uclibc-vx32,wbx-github/uclibc-ng,foss-for-synopsys-dwc-arc-processors/uClibc,ddcc/klee-uclibc-0.9.33.2,foss-xtensa/uClibc,hjl-tools/uClibc,czankel/xtensa-uclibc,ndmsystems/uClibc,ysat0/uClibc,ysat0/uClibc,ysat0/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,groundwater/uClibc,hwoarang/uClibc,wbx-github/uclibc-ng,atgreen/uClibc-moxie,foss-for-synopsys-dwc-arc-processors/uClibc,atgreen/uClibc-moxie,ddcc/klee-uclibc-0.9.33.2,kraj/uClibc,majek/uclibc-vx32,kraj/uclibc-ng,kraj/uclibc-ng,brgl/uclibc-ng,hjl-tools/uClibc,mephi42/uClibc,kraj/uClibc,mephi42/uClibc,hwoarang/uClibc,foss-xtensa/uClibc,groundwater/uClibc,ddcc/klee-uclibc-0.9.33.2,mephi42/uClibc,groundwater/uClibc,atgreen/uClibc-moxie,m-labs/uclibc-lm32,kraj/uclibc-ng,groundwater/uClibc,skristiansson/uClibc-or1k,czankel/xtensa-uclibc,czankel/xtensa-uclibc,wbx-github/uclibc-ng,m-labs/uclibc-lm32,wbx-github/uclibc-ng,kraj/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,ffainelli/uClibc,waweber/uclibc-clang,groundwater/uClibc,majek/uclibc-vx32,foss-xtensa/uClibc,hwoarang/uClibc,waweber/uclibc-clang,ffainelli/uClibc,skristiansson/uClibc-or1k,ffainelli/uClibc,brgl/uclibc-ng,hwoarang/uClibc,hjl-tools/uClibc,ffainelli/uClibc,atgreen/uClibc-moxie,kraj/uclibc-ng,ndmsystems/uClibc,brgl/uclibc-ng