A variable with a type but no default value or override resulted in an
empty string. This matches the legacy behavior of untyped variables,
but does not make sense when using types (an empty string is itself a
type violation for everything except `string`). All variables defined
with a type but with no value are now a typed `null`.
A variable explicitly typed `any` was previously treated as if the
typing was omitted; with no defined value or override, that resulted in
an empty string. The `any` type is now distinguished from an omitted
type; these variables, with no default or override, are also `null`.
In other respects, the behavior of `any` is unchanged and largely
behaves as if the type was omitted. It's not clear whether it should be
supported, let alone how it should behave, so these tests were removed.
It's being treated as undefined behavior.
Signed-off-by: Roberto Villarreal <rrjjvv@yahoo.com>
Roberto Villarreal
3c0f5c5c21