Convert Ewald correction tables to C++

Convert Ewald correction tables to C++

This change introduces a separate struct for the non-bonded
Ewald correction tables that uses std::vector instead of
manual memory management.
Although there are new (unused) table classes, the reorganization
is needed now to convert interaction_const_t to proper C++.

This change is only refactoring.

Change-Id: I9dbdcd401c8a3d9674775a25117663cbe86ecfb3