ref: 306763569e09bc8a6940b54f879a03d3ff8f3b65
dir: /lib/thread/bld.proj/
lib thread = common.myr # linux impl of basic thread primitives condvar+linux.myr mutex+linux.myr spawn+linux.myr future+linux.myr exit+linux-x64.s atomic-impl+x64.s atomic.myr ;;