Proposed significant breaking changes to Win32

[Yitzchak Gale]

There are some discussions going on in this issue:

https://github.com/haskell/win32/issues/24

with proposals for extensive breaking changes
to the Win32 library. Well over 100 functions would
be involved. These changes would finally fix many
long outstanding defects in the API, some of which
make it impossible to use important Win32 functions
in the way originally intended.

I would generally support these proposals (after having
seen that Neil supports them). But does anyone have
any estimate of how much breakage it would cause on
Hackage, or in the Windows builds of GHC?

Thanks,
Yitz