Quantifying the time overhead of Cygwin make

[Tor Lillqvist]

> What would be interesting to see is a bench mark in terms of compilation
> times and evaluate if its really worth changing the ABI and breaking
> compatability.

Of course it isn't. Imagine telling a customer "yes, we know the
binary extensions that are business critical to you and which you
probably can't re-create don't work any more, but it is much more
convenient for us to be able to build a few hours faster!".

--tml