Indent lists using <tab> rather than <space>.

This is the convention used throughout the .cmake files of OPM-Core.
Mark deck as FIELD units.

The numbers in the deck are more indicative of FIELD unit conventions
than METRIC unit conventions, so allow the input parser to interpret
the data in that manner.
Favour std::vector<> over variably-sized arrays.

Variably-sized arrays of the form

   int n = 6;
   double a[n];

are an extension to the language that will illicit a suitably
persnickety diagnostic from GCC when invoked with "-pedantic".
Merge pull request #1 from bska/totto82-newfluid2

Correct a few minor issues in PR OPM/opm-core#254