libc/inet/resolv.c: reread resolv.conf if its mtime was changed
libc/inet/resolv.c: reread resolv.conf if its mtime was changed

Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>
Signed-off-by: Denys Vlasenko <42afb3a19136e88700e8b77002ea6a5a94c16782@googlemail.com>

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