Move `MillisToTimeval()` from `netbase.{h,cpp}` to
`src/util/system.{h,cpp}`.
This is necessary in order to use `MillisToTimeval()` from a newly
introduced `src/util/sock.{h,cpp}` which cannot depend on netbase
because netbase will depend on it.
fae86c38bca5c960462e53975314a0749db5d17d util: Remove unused MilliSleep (MarcoFalke)
fa9af06d91e9357e86863781746f0e78a509967e scripted-diff: Replace MilliSleep with UninterruptibleSleep (MarcoFalke)
fa4620be782c2bf6b5ffddf4f671194fdd1536f3 util: Add UnintrruptibleSleep (MarcoFalke)
Pull request description:
We don't use the interruptible feature of boost's sleep anywhere, so replace it with the sleep in `std::thread`
ACKs for top commit:
ajtowns:
ACK fae86c38bca5c960462e53975314a0749db5d17d quick code review
practicalswift:
ACK fae86c38bca5c960462e53975314a0749db5d17d -- patch looks correct
sipa:
Concept and code review ACK fae86c38bca5c960462e53975314a0749db5d17d
fanquake:
ACK fae86c38bca5c960462e53975314a0749db5d17d - note that an instance of `DHAVE_WORKING_BOOST_SLEEP_FOR` was missed in the [linter](https://github.com/bitcoin/bitcoin/blob/master/test/lint/extended-lint-cppcheck.sh#L69), but that can be cleaned up later.
Tree-SHA512: 7c0f8eb197664b9f7d9fe6c472c77d384f11c797c913afc31de4b532e3b4fd9ea6dd174f92062ff9d1ec39b25e0900ca7c597435add87f0f2477d9557204848c