3.0-related deprecations

[Cody Russell <bratsche gnome org>]

Hi all,

gtk+ currently does not build with GSEAL enabled, and I want to remedy
this so we can make progress on 3.0.  I'm planning to post a large
series of patches unless someone has a suggestion for how better to do
proceed with this.

Right now I was thinking to break this up by widget in order to make it
somewhat manageable in terms of review.  Does this seem like a good
idea, or should I just do all the work in one enormous branch and post
for review?

I've posted the first patch[1] and it's about 105k, although it
shouldn't really be a big burden to review.. it adds 5 new API functions
for public struct members that didn't previously have API, otherwise
there's not much of interest in it.  I used the code rewriter to
generate parts of it, but had to insert all the "GtkPrivate *priv =
GTK_WINDOW_GET_PRIVATE (window)" type stuff somewhat manually.

Last thing is what to do with this stuff.  Assuming someone is able and
willing to review it, should it go in git HEAD or should we make another
branch for it?  My preference is to just put it in git HEAD probably.

Thanks,
  Cody

[1]. http://bugzilla.gnome.org/show_bug.cgi?id=582018