equal and greater tests now check stderr
now with ref counting and slightly refactored
Merge branch 'intertarget-code' of github.com:SWP-Ubau-SoSe2014-Haskell/SWPSoSe14 into intertarget-code
fixed issue #163. can be closed. reason was, that string cmp was missing
Merge branch 'master' into intertarget-code
Merge branch 'intertarget-code'