- this refines commit c233961d45, which added prefix scoping.
Default is now off (v2106 behaviour).
The 'useNamePrefix' keyword can be specified on a per function basis
or at the top-level of "functions".
```
functions
{
errors warn;
useNamePrefix true;
func1
{
type ...;
useNamePrefix false;
}
func2
{
type ...;
// Uses current default for useNamePrefix
}
}
```