Using a lot of IpcOneShotServer clutters /tmp with rust-ipc-socket.XXXXXX files

[mkpankov]

I like to put some of one-off work stuff into /tmp to recycle it when I finish working with it, and I get to see 100+ files created by ipc-channel every time. My program uses servers to communicate with each of the subprocesses, of which there are dozens, and these socket files are recreated every time subprocess is recycled.

I'd like to

• customize the location of the files - so that they don't clutter the /tmp itself (maybe /tmp/rust-ipc-sockets/XXX?)
• auto-remove them when server finishes - seems logical and on-point with Rust, since ownership of resources is our selling point