Remove environ from _USE_GNU wrapper.
Remove environ from _USE_GNU wrapper.

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