Errors building dwt with latest tango

[Frank Benoit]

Bill Baxter schrieb:
> This is with the latest SVN tango
> Don't have time to look into these at the moment, but maybe later tonight.

It is much easier to support the tango release instead of tango svn 
trunk. Hence the errors.
I have fixes for them locally, but did not commit them into the public 
repository, waiting for the next tango release.