Add option to allow switching between old and new regex
Add option to allow switching between old and new regex

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