Imported wdlkmpx GtkTreeView Transfer Window implementation

[sedwards]

This patch leaves GtkClist and GtkTree* stuff alone in GTK2, your TreeView is only enabled if it is gtk3, though my plan is to eventually get your treeview code working for both gtk2 and gtk3 and we can just drop the clist stuff entirely.

I have a few minor tweeks outside of the tree to get this working, and of course it is incomplete, but it does work for upload/download and drag and drop.

TODO:

• Make the progress bar work
• Icons

• Add whatever missing functionality for transfers there is

  So yeah my thinking was as follows:

  1. Bring the Treeview code up to the level where it can function as well as the clist/ctree code
  2. Convert all the *.xpms from the other draft path and switch over to gtk2/gtk3 icon reading functions
  3. Once it works properly on both gtk2 and gtk3 we can dump the old clist/ctree code.

[sedwards]

This is the gtk3 build with a minor bit of hacking. It works fairly well, there is just some window placement problems I will look at, but anyway, if you want to merge your code, it will make it easier for me to keep working on it.

[wdlkmpx]

Merge conflict

[sedwards]

Merge conflict

Damnit, I don't understand why it keeps doing that. I've resolved it like twice now. OK I am going to convert this back to a draft, create a new clean branch of master, cherry pick this one in and then try again. I'll convert back to draft for the moment.