#3 Minimum profile support

[Erik Wistrand]

The KF framework currently cannot be run on
the "minimum" profile. This is because the following
classes are used:

java.util.HashMap
java.util.HashSet
java.util.jar.Attributes
java.util.jar.Attributes$Name
java.util.jar.JarEntry
java.util.jar.JarInputStream
java.util.jar.Manifest

by writing own impls of HashMap, HashSet and Manifest,
these dependencies could be removed.