libart: fix config.h according to AMK wisdom wrt 'fat' binaries
libart: fix config.h according to AMK wisdom wrt 'fat' binaries

makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile