Improve a bit Haskell library recommended versions

The hinotify library was missing any versions, and finding one that
works with ghc 6.12 (base 4.2.x) was not obvious. The
test-framework-quickcheck2 recommended version didn't actually work
with the test-framework version, so fix that as well.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>