TODO for PuTTY GTK2 port before merging back into main trunk code
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Things to do before deciding a merge is feasible:

 - gtkcols.c is currently a minimal-work GTK2 port of my original
   GTK1 implementation. Someone should go through it and compare it
   to a real GTK2 container class, to make sure there aren't any
   large chunks we should have reimplemented and haven't, or indeed
   that we shouldn't have reimplemented and have.

 - Investigate the shortcut mechanism in GTK2's GtkLabel, and see if
   it's worth switching to it from the current ad-hockery.

 - Update the autoconf build. Richard B says he had to replace
     AM_PATH_GTK([1.2.0],
   with
     AM_PATH_GTK_2_0([2.0.0],
    + also I'll need to detect early Pangoi and enable my magic
      switches in gtkfont.c.
    + and I'll probably also want to detect GTK2 vs GTK1
      automatically - _and_ provide a command line switch on
      configure to select one manually.

Things to do once GTK2 development is complete:

 - Make sure we haven't broken GTK1.
    + In particular, I know I _have_ broken GTK1 by taking out all
      the GTK1-style list box code. Put it all back in under ifdefs,
      which will be unpleasant but necessary.

Things to do at point of actual merge:

 - Mention Colin in the website's licence page.