  This paper has excessive overlap with the following papers also written by
the authors or their collaborators: gr-qc/0607110, gr-qc/0607115,
gr-qc/0607119, gr-qc/0607109, gr-qc/0607103, gr-qc/0607089, gr-qc/0602012,
gr-qc/0608024, and others.
