Bad column alignment with large character id

[Freezerburn]

When generating fonts with Japanese charaters, it seems that the "id=#" column of the .fnt format gets too large of a number. I ended up with it basically looking like "id=12452x=212", causing the BitmapFont constructor to throw an exception and fail. Likely the code needs to be changed to ensure there is always a space between the id column and the x column.