Remove "CaseSplit" constructor and implementation which could never
be called (the REPLParser uses CaseSplitAt). Furhermore, we no longer
need to export "split" from CaseSplit.hs
Merge pull request #622 from markuspf/fix-tests

Change from shebangs with absolute references to using /usr/bin/env
Merge pull request #621 from hannesm/cleanup

Remove "CaseSplit" constructor and implementation which could never
Reset test run scripts to mode 0755