1. Remove set_icons property 2. Make it a GtkWidget subclass 3. Add gtk_fishbowl_set_creation_func() 4. Make the widgetbowl use the new benchmarking infrastructure of the fishbowl
Same as fishbowl, but with widgets
Avoids usage of GtkFixed where child properties eat up all the CPU time. And that's kinda not what I want to benchmark.
