Add cellAvconfExt and cellVideoOutGetScreenSize

Also added a flag to RSX debugger showing if two sided lighting is
enabled, a 3D Monitor option and fixed a ")" missing in TODO printout
for sys_spu_elf_get_information.
Also remove couple unneeded be_t
Removed wx implementation and added Windows only implementation
Merge pull request #822 from tambry/cellAvconfExtAndVideoOut

Add cellAvconfExt and cellVideoOutGetScreenSize