Modifiers on local variables are ignored

• Testcase included:

  yes

In Java, at least, the only modifier allowed on local variables is "final." Groovy seems to accept and ignore all modifiers, final or otherwise. For example:

class Foo {
def bar() { volatile String xxx println xxx }
}

Compiles just fine.

So there are really two issues here: (a) "final" semantics not being represented and enforced, and (b) all other modifiers not generating parse errors.

For (a), the DeclarationExpression doesn't seem to have a place to hold modifiers; perhaps it should have an isFinal field?