ash testsuite: add most of hust tests which pass for ash

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-vars/empty.right b/shell/ash_test/ash-vars/empty.right
new file mode 100644
index 0000000..2cb3c70
--- /dev/null
+++ b/shell/ash_test/ash-vars/empty.right
@@ -0,0 +1,3 @@
+a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F
+a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F
+a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F