msh: create testsuite (based on hush one)
hush: add TODO (doesn't know ":" command)

diff --git a/shell/msh_test/msh-parsing/quote1.right b/shell/msh_test/msh-parsing/quote1.right
new file mode 100644
index 0000000..cb38205
--- /dev/null
+++ b/shell/msh_test/msh-parsing/quote1.right
@@ -0,0 +1 @@
+'1'