- Works on Mac
- Needs to be checked on Linux / Windows.

- Required lib version can be in a range
- conan build ../path/to/source builds with conan specified compiler

Cleanup output messages

The time for the linear solver is written already in NonLinearSolver::solver().

Update CTests

Add NOT OGS_USE_MPI to explicit requirements for the non-mpi tests.
For the parallel tests require mpi.