locale.c: export newlocale only if XLOCALE is defined
locale.c: export newlocale only if XLOCALE is defined

newlocale is used by setlocale, so we need the hidden version
even if XLOCALE is not defined

Signed-off-by: Peter S. Mazinger <1f4071d9f342c1637b13af9bc258f2ff72e96758@gmx.net>

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