ww test: retain directory test binaries like Go

test/tool/driver_test.ww

@@ -167,13 +167,12 @@ fn runrootargv(dir: str, root: str, name: str, drv: str,
 // a3 == "" means a two-token argv tail; no row passes a literal "".
 @test fn flagargs() void = {
 	let a1: []str = ["build", "build", "build", "build", "build",
-		"run", "run", "run", "test", "test", "test", "test", "test",
-		"test"];
+		"run", "run", "run", "test", "test", "test", "test", "test"];
 	let a2: []str = ["-o", "-I", "-L", "-l", "-zz",
-		"-o", "-l", "-zz", "-l", "-zz", "-I", "-o", "-o",
+		"-o", "-l", "-zz", "-l", "-zz", "-I", "-o",
 		"-run"];
 	let a3: []str = ["", "", "", "", "",
-		"", "", "", "", "", "", "", "x",
+		"", "", "", "", "", "", "",
 		""];
 	let subs: []str = [
 		"ww build: -o needs an argument",
@@ -188,7 +187,6 @@ fn runrootargv(dir: str, root: str, name: str, drv: str,
 		"ww test: unknown flag",
 		"ww test: -I needs an argument",
 		"ww test: -o needs an argument",
-		"ww test: -o needs -c for a package target",
 		"ww test: -run needs an argument"];
 	let i: i32 = 0;
 	for (i < subs.len) {