[Dune] warnings in grid check

[Andreas Dedner]

Dear all,

is it necessary to still check all the deprecated methods in the grid 
check? I find it quite
difficult to find the real problems due to about 200 warning concerning 
the use of
deprecated methods (subIndex<c> for examples). One can get rid of them 
by defining
DISABLE_DEPRECATED_METHOD_CHECK but I find that a bit combersom.

Could we remove those tests or enable them with
ENABE_DEPRECATED_METHOD_CHECK which then should prehaps also lead to
a disabling of the deprecated method warning. Alternatively it might be 
time to
change the default behavior of DUNE_ENABLE_OLD_NUMBERING which seems to
be set to 1 by default. Should 2.0 perhaps not define this macro and 
leave it to the user
to set it if required?

Best
Andreas