SoftwareUpdater should cache downloaded packages.

[bbjimmy]

If the update job fails due to a bad connection. SoftwareUpdater starts over from the first file.

This is not an issue usually, but recent changes required me to wait to update. I was updating 232 packages and got to the 122nd package when the connection dropped. the updater indicated that the update failed and gave me one option, quit. on the next attempt, it re-started downloading file 1 of 232.

In my case, flakey connections are part of the game, I am connected via Sattelite relay. Also, the data is capped so re-trying causes issues.

The program should keep a list of downloaded files and resume from the place it was interrupted if it can.