What must be done for 7.10 compatibility?

[davidsd]

I managed to get the 7.10 branch to compile with GHC 7.10.3 by making it compatible with the new integer-gmp, see here: https://github.com/davidsd/rounded/tree/7.10

However, even simple things like fromInteger don't seem to be working. For example,

do
  let x :: Rounded AwayFromZero 128 = fromInteger 1
  print x

prints 2.584942247048919467950081e24. I guess this has something to do with the cmm wrappers, but I'm afraid I don't understand what they're doing or how they work. What can I do to get this working?

[claudeha]

fixed by #27 merge