Error when building from current git

[Peter Hull]

Hi all,
I have started seeing this error after updating to the latest git master
and running `ant` or `ant build-basic`:
> ...\netbeans\nbbuild\build.xml:660: Target "all-o.n.swing.laf.dark" does
not exist in the project "nbbuild". It is used from target
"nbmerge-build-one-cluster".
Has anyone else seen this?
I'm using Windows & JDK1.8 to build.
Pete