Merge pull request #2 from Gluewine/master

Merge from Gluewine/Gluewine
Merge pull request #19 from gevaerts/master

Add "gluedgwt", a package that supports tight gluewine/gwt binding
Merge pull request #20 from sergeds/master

Merge pull request #2 from Gluewine/master
Don't try to instantiate interfaces.