- Introduce a very simple class ParseMode which will become a simple
value object which can be used to control the behavior when errors
and inconsistencies are encountered in the parse and EclipseState
construction phases.
- Added ParseMode instance as second argument to all parseXXX()
methods.
this is just the result of
```
find -iname "*.[ch]pp" | xargs sed -i "s/ *$//"
find opm/parser/share/keywords -type f | xargs sed -i "s/ *$//"
```
so if it causes conflicts with other patches, the others should get
priority. The rationale behind this patch is that some people tell
their editor to remove white space which leads to larger than
necessary patches...
