Eclipse does not have a PERM keyword
fix some keyword names

The queried keywords are unknown to the parser and after manual
inspection also to the Eclipse RM. There might be wrong keywords some
left, but these were to ones needed to get SPE9 started using
sim_fibo_ad...
Merge pull request #596 from andlaus/fix_some_keyword_names

Fix some keyword names
Glue in support for the grid property modifier keywords

this basically means using Opm::EclipseState instead of the raw deck
for these keywords.

with this, property modifiers like ADD, MULT, COPY and friends are
supported for at least the PERM* keywords. If additional keywords are
required these can be added relatively easily as well.

no ctest regressions have been observed with this patch on my machine.