Normalize to NFC before comparison (fix #1810)
Normalize to NFC before comparison (fix #1810)

The filename gets normalized to NFD on OS X causing spurious failures.

Let's normalize both sides to NFC in case the Cabal file is in some
other normalization for any reason.

This is a slight hack.

AndreasPK/stack,deech/stack,AndrewRademacher/stack,juhp/stack,Fuuzetsu/stack,AndrewRademacher/stack,mrkkrp/stack,martin-kolinek/stack,AndreasPK/stack,deech/stack,MichielDerhaeg/stack,Blaisorblade/stack,anton-dessiatov/stack,juhp/stack,Blaisorblade/stack,anton-dessiatov/stack,mrkkrp/stack,Fuuzetsu/stack,MichielDerhaeg/stack,martin-kolinek/stack