* cannon: Update futex-related tests - use 32-bit futex values

* cannon: Update go vm implementation - use 32-bit futex values

* cannon: Update sol 64-bit vm implementation - use 32-bit futex values

* cannon: Update sol 32-bit vm implementation - use 32-bit futex values

* cannon: Update MIPS64 version

* cannon: Update MIPS2 version

* cannon: Run semver lock

* cannon: Update semver comments to match actual version

* cannon: Run semver-lock

* cannon: Randomize futex value in register when testing

* cannon: Tweak comment

* cannon: Ignore the upper bytes in the futex value register

* cannon: Make FutexVal thread field 32-bit

* cannon: Run semver-lock

* cannon: Fix some inconsistencies, run semver-lock

* cannon: Rename testutil method