Override every item's touch_interaction table according to user configuration.
Configuration
The mode provides a configuration entry for each of the three components of the touch_interaction table. Each can be set to one of three states:
- don't override that entry
- set entry to "long dig, short place"
- set entry to "short dig, long place"
One can also choose not to override the 'hand' item. This isn't really useful except as a simple test scenario giving different tools different touch_interaction values.