Fixes
```
In file included from opm-simulators/opm/simulators/flow/BlackoilModelEbos.hpp:53,
from opm-simulators/opm/simulators/flow/SimulatorFullyImplicitBlackoilEbos.hpp:26,
from opm-simulators/flow/flow_ebos_gaswater.cpp:28:
opm-simulators/opm/simulators/linalg/ISTLSolverEbos.hpp: In member function ‘bool Opm::ISTLSolverEbos<TypeTag>::solve(Opm::ISTLSolverEbos<TypeTag>::Vector&)’:
opm-simulators/opm/simulators/linalg/ISTLSolverEbos.hpp:265:56: error: incomplete type ‘Opm::WellContributions’ used in nested name specifier
auto wellContribs = WellContributions::create(accelerator_mode, useWellConn_);
^~~~~~
```
split in API specific classes for Cuda/OpenCL
this to
1) it's cleaner
2) it avoids pulling in openCL code in cuda classes which leads
to clashes between nvidia headers and opencl.hpp
there is still too much API specific things in interface between the
bda components to work through a virtual interface so we still have to cast
to the relevant implementation in various places.
Previously, the user had to specify it in the json file read from the
FlexibleSolver or 1 was used. Unfortunately, the index depends on the
model used and it seem rather opaque to a user what that index is.
With this commit we determine the pressure index from the model.
It is only used within this context and produces a warning of the
form
ISTLSolverEbos.hpp:128:25: warning: unused variable ‘gridForConn’
unless the build configures accelerator support.
Also introduce new class WellModelAsLinearOperator making a well model
into an actual Dune::LinearOperator, this prevents the TypeTag dependent
type from leaking into the type of the WellModelMatrixAdapter instantiation.
As a side benefit, the adapter classes can now adapt (i.e. combine with a
matrix operator) any linear operator.
`NEW_PROP_TAG` is now a definition and not just a declaration.
Eliminate superfluous declarations, include headers with definitions.
Make one necessary forward declaration explicit.
boost::property_try::get without a defaults throws an exception. As
result the nonlinear solver and timestepper think that there is a
problem with solving and chop the timnestep until they give up.
This commit fixes this by using a default and falling back to the
command line specified value for the default solvers.
