Synthesis, Characterization, Phase Diagrams and Superconducting and Normal State Magnetic Properties of La2 [subscript X] Sr [subscript X] CuO4 (0 [less Than Or Equal To] X [less Than Or Equal To] 0.08) and Electrochemically Oxidized La2-[subscript X] Sr [subscript X] CuO [subscript 4+ Delta](0 [less Than Or Equal To] X [less Than Or Equal To] 0.33, 0 [less Than Or Equal to Delta Less Than Or Equal To] 0.12)