wrong conversion this.some_namespace::method()

part1:

as3 code for example:

``` actionscript
package {

public class Issue239 {
use namespace $internal;

public function Issue239() {
this.$internal::test();
$internal::test();
}

$internal function test():void {
trace(this);
}
}
}

internal namespace $internal;
```

expected result:

``` haxe
class Issue239
{

public function new()
{
this.test();
test();
}

private function test() : Void
{
trace(this);
}
}
```

actual result:

``` haxe
class Issue239
{

public function new()
{
this.__DOLLAR__internal::test();
__DOLLAR__internal;test();
}

private function test() : Void
{
trace(this);
}
}
```

No source file or test is named. Start by reproducing the conversion with the ActionScript example and compare the generated Haxe with the expected output; done means namespace-qualified calls convert to the corresponding method calls without the malformed namespace text.

Written by the indexing model from the issue text.