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

diff --git a/shell/hush_test/hush-bugs/quote2.right b/shell/hush_test/hush-bugs/quote2.right
new file mode 100644
index 0000000..3bc9edc
--- /dev/null
+++ b/shell/hush_test/hush-bugs/quote2.right
@@ -0,0 +1 @@
+>1