* recorder/dogtail-recorder: Add a UI for setting the text property of
a Node instance. While recording, you click 'Input Text', and a dialog pops up.
Click the node whose text you want to set, then type the text into the dialog
and press OK. The recorder sets the node's text, then writes out lines in the
script to do the same.

* recorder/recorder.glade: Add 'Input Text' button.

* recorder/textinput.glade: Add new glade file: the text input dialog.

* MANIFEST.in: Add textinput.glade to tarball.

* setup.py: Add textinput.glade to packages.