Implement cross-platform mkdtemp

[Hinidu]

We at https://github.com/neovim/neovim have faced with the need of porting glibc's mkdtemp to Windows. Would it make sense to make PR in your project for this? Perhaps introducing uv_fs_mkdtemp function.

[saghul]

I'd be OK with it. @indutny?

[indutny]

/me too.

[txdv]

Are you going to submit a patch for libuv?

[Hinidu]

@txdv Sorry I was quite busy last month. I hope that I can make a patch in the near future.
With what purpose you are asking? If you want to do it yourself I don't mind.

[txdv]

With the intent to close this issue if you leave it unresolved.

I'm currently working on tcp/udp so I have enough on my plate already.

@Hinidu are you going to come up with a patch?

[saghul]

@txdv you don't need to do it yourself. I also wanted to close all unresolved issues but then we might lose track. So I'll leave them open for now.

[txdv]

@saghul "you don't need to do it yourself." - you mean like going through all the issues and read them up?

[saghul]

@txdv no, I mean implement the requested feature. I would like to have this feature implemented, but if we close the issue we'll forget about it. I do feel distressed about the 100+ issues, but well, there so much that can be done.

[txdv]

This looks similar to this issue: #1277

[saghul]

Closing, continues on #1368.