Added code that resolved kernel module dependencies are automatically copies all needed kernel modules to the install image
Just added a comment to the code
Added 'some' comments to the code so it's a bit easier to follow... probably too many, but they can easily be removed
Added absolute path to depmod invocation
Split the INSTALL_MODULES value into separate lines.

This makes it better readable since each module is on it's own line.
Moved the functions to the top of the file, below the constants.