Apparently Buildship generates these when one uses Import -> Existing
Gradle Project:
<https://discuss.gradle.org/t/buildship-eclipse-plug-in-multiproject-builds/24030/5>.
We can use the Gradle "eclipse" plugin if customizations are
necessary, but my impression is that the intent is to treat ".project"
and ".classpath" as generated files, not sources to be tracked in
source control.
This fixes one Eclipse "The JRE container on the classpath is not a
perfect match to the 'JavaSE-1.7' execution environment" warning in
the "Plug-in Development" category.
Ben Liblit
Julian Dolby
Brian Pfretzschner