Convert an old-style class in Tool/packaging/rpm.py to a new-style class.
Convert an old-style class in Tool/packaging/rpm.py to a new-style class.

git-svn-id: 7892167f69f80ee5d3024affce49f20c74bcb41d@4875 fdb21ef1-2011-0410-befe-b5e4ea1792b1

azverkan/scons,azverkan/scons,azverkan/scons,azverkan/scons,azverkan/scons