Updated metamacros.h to jspahrsummers/libextc@d8974b4c00e59e18d198eb5f3e29ff76086de757
Updated metamacros.h to jspahrsummers/libextc@d8974b4c00e59e18d198eb5f3e29ff76086de757

goodheart/libextobjc,kolyuchiy/libextobjc,sanojnambiar/libextobjc,telly/libextobjc,liuruxian/libextobjc,bboyesc/libextobjc,WPDreamMelody/libextobjc,sunfei/libextobjc,sandyway/libextobjc,KBvsMJ/libextobjc,jiakai-lian/libextobjc