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build: fix it on Windows

test: move Random into mgtest library

cmake: add installation commands

util: drop some unused code

assert: use dev assert on hot paths

atomic: drop old atomics

test: use new atomics

thread: use new atomics

mutex: use new atomics

bench: use new atomics

scheduler: relax some memory barriers

signal: relax some memory barriers

build: fix build on Linux

mpsc-queue: relax some memory barriers