Added a ParserState struct, to encapsulate the temporary state of the parsing process
Added constructor, moved ParserState struct to cpp file
Merge pull request #66 from flikka/parser-state-refactor

Added a ParserState struct, to encapsulate the temporary state of the pa...
Changed "header" to <opm/parser/eclipse/xx/header>.
Added basic system for units - not yet hooked into the Parser items.
Parser.hpp: make the guardian macro less prone to conflicts

as soon as this class is used with another project, the old macro name
basically screamed for a naming conflict and a _very_ confused user...
Merge pull request #68 from joakim-hove/units

Units