This interface method was added in Eclipse Neon, so we need to implement
it here to have a non-abstract class. With this fix, WALA now builds
with no errors inside Eclipse Neon. (There are still a few thousand
warnings, but that's nothing new.)
The new project only depends on the minimal Eclipse plugins to make the
ECJ frontend work. Hence, it should be amenable to creating a Maven
Central jar.
Manu Sridharan
Julian Dolby
Ben Liblit