Save File Optimizations

Save files should be optimized and allow for removal of backup saves via define.

EDIT: One issue that came up when discussing this is compatibility with Star Display programs. A plan will need to be figured out for this. @thecozies suggested potentially creating a script that builds a file to be used in Star Display, based on the save file structure. Do not put backup removal in master until this is solved, or unless save files are padded by default via define to match the expected save structure (this should probably exist regardless, since the average joe might not bother wanting to submit a star layout).

Additional requirement: Save file structs ***must*** be forced to use 8-byte alignment in some way or another (unless padding mentioned above is also written to the savefile).