Bugfix from Atsushi Nemoto: return nonzero error code on failure  (without which busybox ping segfaults on error).  Broken during locking changes in in svn 16801.
Bugfix from Atsushi Nemoto: return nonzero error code on failure 
(without which busybox ping segfaults on error).  Broken during locking
changes in in svn 16801.

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