[cmake] Remaining work about sleef

[shibatch]

You don't need to include gencoef. This is independent from the other parts.

It is of course okay to work on dft and dft_tester, but I think adding iut building for MSVC has greater priority.
We also need to check if the new build system works on every combination of OS and compiler.

[fpetrogalli]

I think we should also add the Intel compiler on Travis to make cmake-transition fully compatible with the original Makefile system.

[shibatch]

Does it take time to add aarch64 to Travis?
And aarch32, if possible.

[shibatch]

Adding cmake support for dft and dft_tester is almost done.
I am now thinking about removing makefiles.

Linking with libmpfr on Windows is not implemented, and I don't have prospect for this. I think an easy way is to leave makefile for this purpose. This makefile will build iut with Cygwin, and do testing.
Small makefiles will still be needed in order to do cleanup.

There are still a few things to be done.

• AVX512F detection is not working correctly.
• AARCH32 support has to be added
• Intel Compiler support has to be added

[xoofx]

Let me quickly check if I can setup libmpfr on Windows

[xoofx]

Just an update, I looked at libmpfr on Windows, and it looks like a bit messy in order to get it compile, as it brings 2 unofficial repositories in the dependency + a fork to add cmake compilation integrated.

[shibatch]

Okay, thanks.
I will try to write files for building and testing with Cygwin.

[fpetrogalli]

Windows testing is supported since #128, closing this issue.