This commit switches a set of OPM-Common's unit tests away from
using direct calls to libecl functions and into using base types
from OPM-Common itself (along with Boost.Filesystem).
In particular summary related queries are replaced by calls to ESmry
member functions (wrapped in libecl-like interfaces to minimise code
changes). We disable checks on unit strings since ESmry currently
does not have a way of associating those with individual variables.
With this commit the code to evaluate UDQ values has been extended/refactored in
many ways:
- There is an increased awarenwss of variable type, i.e. a well related UDQ
versus a field related UDQ. The variable type flows through the AST, and it
is verified that the expression to evaluate and the target variable are of
compatible types.
- Have added support for UDQ field variables and UDQ group variables.
- The UDQSet type and the UDQDefine::eval() have been refactored to multiplex
on all the UDQ types, and the specialized UDQWellSet has been removed.
