hush: fix '{ false; echo $?; }' bug.
hush: expand testsuite. variable expansion is still very broken

diff --git a/shell/hush_test/hush-vars/star.right b/shell/hush_test/hush-vars/star.right
new file mode 100644
index 0000000..b33b176
--- /dev/null
+++ b/shell/hush_test/hush-vars/star.right
@@ -0,0 +1,5 @@
+.1.
+.abc.
+.d.
+.e.
+.f.