add support for __UCLIBC_CTOR_DTOR__
add support for __UCLIBC_CTOR_DTOR__

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