liboauth is no longer needed.
Removed references to oauth token and secret from code.
I forgot to remove these in 42c71884a27a0e5a1435f72834bfe4d0ab214ca6
Try to use Linux installers as replacement for Galaxy repository.
Linux installers use MojoSetup which means that the installers are Zip files that have bash script and installer binary prepended.
We can get zip file entries from zip central directory and then split the game installer to chunks based on those file entries.
Therefore we can download individual files from the installer.