A trait allowing to look for classpath entries of given type in zip and jar files. It provides common logic for classes handling class and source files. It's aware of things like e.g. META-INF directory which is correctly skipped.
Returns packages and classes (source or classfile) that are members of
inPackage string is a full package name, e.g., "scala.collection".
This is the main method uses to find classes, see class
rootMirror.rootLoader is created with
inPackage = "".