icedtea6: CORBA backports broke bootstrap build

[Stefan Ring]

>> Also, make sure you're building out of tree or have a clean source directory.
>
> I'm building in tree, and definitely completely clean. My build script
> always deletes the entire tree before building. I'll try building
> out-of-tree for a change...

Ok, building out-of-tree does indeed work. Historically, the in-tree
build has always worked for me up until last week. I don't know how
difficult it would be to restore that capability.

Cheers