Replaced ACLStrategised, enabling other ACL improvements (#1392)

Replaced ACLStrategised, enabling other ACL improvements (#1392)

The ACLStrategised class stands in the way of several ACL bug fixes and
improvements because its design forces us to place ACL-like match()
methods inside non-ACL classes, creating two parallel matching
hierarchies: one rooted in the ACL class and one rooted in the Strategy
template. The two APIs have similar methods, but Strategy-based objects
lie outside the ACL hierarchy and cannot be treated as ACL objects.

ACLStrategised pairs an ACL-like matching algorithm (a Strategy-derived
class) with an ACLData-derived class. The need to combine the two is
genuine, but the same combination is best supported without creating a
parallel hierarchy of Strategy classes. The new ACL-derived
ParameterizedNode base class accomplishes that, addressing the old
ACLStrategised design XXX.

Strategy-derived classes were not pooled at all! With these changes, all
formerly ACLStrategised classes get individual memory pools, typically
one per acltype, with proper acltype-based naming in mgr:mem reports. No
other functionality changes intended.