* Copyright (C) -> Copyright
* add "or later" clause to files that i have the sole copyright on
* add current year (2007) to my copyrights where it was missing
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=696946
* Package::isValid() checks if the Package is valid, e.g. all required files and dirs are present
* add methods to PackageStructure which return just the required bits
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=690102
