sim_fibo_ad: remove compatibility code for old parser

this makes the simulator quite a bit more maintainable: setting
USE_NEW_PARSER to 0 did not even compile after the the constructor for
the wells manager which took the old deck was removed last
week. Since, according to Atgeirr, SPE-1 is now producing exactly the
same results as before, it also does no longer make too much sense to
keep that code on life support...
Merge pull request #114 from andlaus/sim_fibo_ad_remove_old_parser

sim_fibo_ad: remove compatibility code for old parser
Add more options for Selector class.

You can now choose which comparison to do for the indicator vector
to find when to choose the left argument. Only >= before (still default).
Merge pull request #115 from atgeirr/expand-selector-options

Add more options for Selector class.