Initialization is now done in the Main::initMPI() method.
For configurations with dune-fem, this also caused crashes
with dune-fem versions prior to 2.8.
this is very convenient during development.
we can then remove the FLOW_BLACKOIL_ONLY option,
as it is no longer needed - use the flow_blackoil binary instead.
however we need to keep this support in Main.hpp due to the python
bindings relying on it.
We resort to consistently use unique_ptrs in EclBaseVanguard for
the data read from ECL files or set externally. This means that
during the simulation EclBaseVanguard owns this data and not Main
or the ebos setup functions. This ownership transfer becomes
transparent due to std::move.
This came up when trying to fix the parallel runs of ebos and during
that removing some code duplication.
Make Opm::FlowMainEbos capture the variables argc, argv, outputCout, and
outputFiles. Passing the variables to the constructor and saving them as
class variables in Opm::FlowMainEbos makes the implementation of the
Python interface simpler. For example, the step_init() method does not
need to ask Opm::Main about the values of the variables when it needs to
run execute() in FlowMainEbos.
Another advantage of this refactoring could be that less variables needs
to be passed around from Opm::Main, to flow_ebos_xxx.cpp, and then again
to FlowMainEbos.
