* Template construction of Pool elements
The Pool class is used by verona-rt. The recent changes made this
less nice to consume as an API.
This change makes the construction logic a template parameter to the
Pool. This enables standard allocation to be used from Verona.
* Drop parameter from acquire
Pool::acquire took a list of parameters to initialise the object that it
constructed. But if this was serviced from the pool, the parameter
would be ignored. This is not an ideal API.
This PR removes the ability to pass a parameter.
f38ee89e72