they used to be in opm-core, but this allows to be more flexible with
the dependency order: What's now called "opm-core" can easily depend
on opm-material which might come in handy for the refactoring.
Besides moving in classes from opm-core, the infrastructural code
which was still in opm-material is moved to the directory
opm/material/common. The intention is to collect these classes at a
central location to make it easy to move them to a real "core" module.
(if this is ever going to happen.)
These index names have been fully fluid system dependent for a while
and are supposed to be just used for convenience. This means that
phase names are now actual camelCase words.
basically the only Dune thing which is still used are the FieldVector
and FieldMatrix classes used by some constraint solvers. Until
something similar goes into opm-core, opm-material must depend on
dune-common...
use 'const' instead to make old compilers happy. the disadvantage is
that you cannot use the normal methods for template specialization,
but this currently should not be a major drawback.
