Fix the "install_target" target to install to $(PREFIX)$(TARGET_PREFIX)
Fix the "install_target" target to install to $(PREFIX)$(TARGET_PREFIX)

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