Moved legacy code into archive, ready for a new rapid(?) prototype.

I may regret doing this!

unit-tests/eval-string.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-expected='"5"'
-actual=`echo '(eval "5")' | target/psse 2>/dev/null | tail -1`
-
-if [ "${expected}" = "${actual}" ]
-then
-    echo "OK"
-else
-    echo "Fail: expected '${expected}', got '${actual}'"
-    exit 1
-fi