This implements TransferJobWin for win32, enough to make file loads work.
Created attachment 6839 [details] do it
Comment on attachment 6839 [details] do it we discussed this over IRC. Mjs fixed the tabs, and a few other minor comments. There are some things we want to change long term here (like TransferJob internals and the way that ciaro contexts get passed around in the image functions) but those will be for later. r=me.
Maciej landed this on Saturday.