hush: fix '{ false; echo $?; }' bug.

hush: expand testsuite. variable expansion is still very broken

shell/hush_test/hush-vars/star.tests

@@ -0,0 +1,8 @@
+if test $# = 0; then
+    exec "$THIS_SH" star.tests 1 abc 'd e f'
+fi
+# 'd e f' should be split into 3 separate args:
+for a in $*; do echo ".$a."; done
+
+# must produce .1 abc d e f. Currently does not
+#for a in "$*"; do echo ".$a."; done