sync with glibc and rename socket vars to _socket
sync with glibc and rename socket vars to _socket

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