abuild: add support for predefined libs splitfunc

abuild.in

@@ -1204,6 +1204,23 @@ dev() {
 	default_dev
 }
 
+# predefined splitfunc libs
+default_libs() {
+	pkgdesc="$pkgdesc (libraries)"
+	local dir= file=
+	for dir in lib usr/lib; do
+		for file in "$pkgdir"/$dir/lib*.so.[0-9]*; do
+			[ -f "$file" ] || continue
+			mkdir -p "$subpkgdir"/$dir
+			mv "$file" "$subpkgdir"/$dir/
+		done
+	done
+}
+
+libs() {
+	default_libs
+}
+
 is_function() {
 	type "$1" 2>&1 | head -n 1 | egrep -q "is a (shell )?function"
 }