EclipseWriter: Don't mingle multiple operations using arguments

This means that EclipseKeyword now never processes the data it
gets. Instead the data must be explicitly preprocessed by the calling
site using the new auxiliary functions "convertUnit()",
"extractFromStriped()", etc. This approach needs a few additional
temporary copies of the data, but given the facts that readability of
this code is much better using this approach, and that EclipseWriter
is neither a performance- nor a memory critical codepath, I don't care
too much about those temporary arrays...
EclipseWriter: add method variants taking the new instead of the old parser
add variants of all methods which take a deck of the new parser to the well handling code

this is supposed to be a temporary work around for not requiring the
old parser. Most of this code can be removed after the new well
handling code has landed. (which might be still some time, alas.)
some hacks which are currently required to make the Norne deck work

... at least for some definition of "work".