Tidy up the CairoGhci demo
Tidy up the CairoGhci demo

I was using this demo to test that everything now works with GHCi,
including re-initialising the UI multiple times in one program run.

darcs-hash:20070129003959-b4c10-a7af8733137db5634aa55c57c5eb1a84196435f7.gz

thiagoarrais/gtk2hs,thiagoarrais/gtk2hs,thiagoarrais/gtk2hs