no setLogger method of felix Logger class in the latest felix main trunk

[Yingshou Guo]

The karaf master branch depends on felix-4.9.0-SNAPSHOT, if I update it to
5.1.0-SNAPSHOT, there is no setLogger method in the
org.apache.felix.framework.Logger class and an exception will be thrown.
can the "hack to set felix logger" block in the Main.launch method be
properly synched with the latest felix change?