[gitg] (20 commits) Created branch gtk3

[Garrett Regier <gregier src gnome org>]

The branch 'gtk3' was created.

Summary of new commits:

  b3e7dca... Drop GitgSpinner
  0c27970... Don't set a GtkLinkButton uri hook
  c6fab23... Don't use gdk_cursor_unref
  36fa9b2... Rename GDK_* to GDK_KEY_* and bumb GTK+ to 2.90.7
  edbe296... Drop GTK+ 2
  376449f... GtkObject is gone
  c06d2c1... Don't set GtkAboutDialog url and email hook
  b9b6cea... Use GtkScrollable
  1136c7e... Fix the details panel's info from expanding
  4c6a028... GdkDrawable is gone
  4398a10... GtkWindow now has the resize grip not the GtkStatusbar
  ec29ed3... GTK+ 3's GtkAboutDialog choose to be ugly by default.
  018b7d5... Set GtkAboutDialog's license-type instead of our own licens
  4969e8a... Dont use gtk_widget_size_request
  95566b3... Don't use gtk_cell_renderer_get_size
  20a8004... Port to GtkWidget's new "draw" signal
  0e71d02... Port to GtkStyleContext and GdkRGBA
  ebddf2a... Port to GtkSourceMarkAttributes
  33dfcf0... Fix GitgCellRendererPath
  9bcfa13... Make GitgDiffLineRenderer compile