Updated 3.6 build in trees/gnomeos-3.6-i686-{devel,runtime}

[Colin Walters <walters verbum org>]

I committed the wip/ostbuild-v3 branch; it's a pretty major rework.
Basically I dropped the whole source/binary snapshot distinction, and
the contents.json we put in binary trees is now exactly the same
as a resolved source manifest.

https://live.gnome.org/OSTree/Ostbuild/DeveloperWorkflow

is now updated.  However, as far as actually using it myself,
having wireless inside the system has now become important, so I'm
looking at that =)  Just imported linux-firmware into the tree.

After I have some things stabilized and tweaked more, I'll make a 2012.7
release.

Oh, important note: In the new system, trees are stored with a trees/
prefix, rather than at at the toplevel.  In other words, it's now:

ostree --repo=/ostree/repo diff trees/gnomeos-3.6-i686-devel

This is clearer, I think.