patch 8.1.2019: 'cursorline' always highlights the whole line

Problem:    'cursorline' always highlights the whole line.
Solution:   Add 'cursorlineopt' to specify what is highlighted.
            (closes #4693)
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index ee2a8f3..68f26de 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -92,6 +92,7 @@
 	test_crypt \
 	test_cscope \
 	test_cursor_func \
+	test_cursorline \
 	test_curswant \
 	test_debugger \
 	test_delete \