globals: Added LAUNCH_OPTIONS full list of options
Block: Added id_main, id_sub, for use with savingsystem.py
Values are autogenerated from the integral and decimal component of id
Saving: Added new save system: Flatfile_Struct
Uses struct.pack to store blockdata and sectors.
Currently only stores blockid and position, when blocks have more attributes
they'll need to be added to the save format.
savingsystem.py: Changed tabs to spaces, as per the rest of the project
main.py: Changed launch option -nocompression to -save-mode
Merge branch 'saving' of git://github.com/Nebual/Minecraft