branch-1.4 scala 2.11

[Koert Kuipers]

i am having no luck using the 1.4 branch with scala 2.11

$ build/mvn -DskipTests -Pyarn -Dscala-2.11 -Pscala-2.11 clean package

[error]
/home/koert/src/opensource/spark/core/src/main/scala/org/apache/spark/rdd/RDDOperationScope.scala:78:
in object RDDOperationScope, multiple overloaded alternatives of method
withScope define default arguments.
[error] private[spark] object RDDOperationScope {
[error]