deps: patch V8 to 6.5.254.38

[MylesBorins]

Refs: v8/v8@6.5.254.31...6.5.254.38

[MylesBorins]

CI: https://ci.nodejs.org/job/node-test-pull-request/13644/
V8-CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/1261/

[MylesBorins]

Looks like we have a failure on ppc-be
/cc @nodejs/platform-ppc @nodejs/v8

15:11:39 === cctest/test-run-wasm-simd/RunWasm_SimdLoadStoreLoad_compiled ===
15:11:39 --- stderr ---
15:11:39 Received signal 11 SEGV_MAPERR 000000000018
15:11:39 
15:11:39 ==== C stack trace ===============================

[targos]

It's expected. ppc-be is unsupported since Node 8. We have to ignore this failure until the job is updated to stop running on this platform

[Flarna]

If you could update to 6.5.254.37 instead #19200 would be fixed too...

[MylesBorins]

bumped to 6.5.254.38
CI: https://ci.nodejs.org/job/node-test-pull-request/13662/
V8-CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/1263/

[MylesBorins]

weird new failure on ppcle

not ok 654 parallel/test-http-client-timeout-agent
  ---
  duration_ms: 0.721
  severity: fail
  stack: |-
    res#0 data:0
    res#0 end
    res#2 data:2
    res#2 end
    res#4 data:4
    res#4 end
    res#6 data:6
    res#6 end
    res#8 data:8
    res#8 end
    res#10 data:10
    res#10 end
    res#12 data:12
    res#12 end
    res#14 data:14
    res#14 end
    res#16 data:16
    res#16 end
    res#18 data:18
    res#18 end
    res#20 data:20
    res#20 end
    res#22 data:22
    res#22 end
    res#24 data:24
    res#24 end
    res#26 data:26
    res#26 end
    res#28 data:28
    res#28 end
    req#1 timeout
    req#3 timeout
    req#5 timeout
    req#7 timeout
    req#9 timeout
    req#11 timeout
    req#13 timeout
    req#15 timeout
    req#17 timeout
    req#19 timeout
    req#21 timeout
    req#23 timeout
    req#25 timeout
    req#27 timeout
    req#29 timeout
    req#0 timeout
    req#28 close
    req#26 close
    req#24 close
    req#22 close
    req#20 close
    req#18 close
    req#16 close
    req#14 close
    req#12 close
    req#10 close
    req#8 close
    req#6 close
    req#4 close
    req#2 close
    req#0 close
    req#29 error
    req#29 close
    req#27 error
    req#27 close
    req#25 error
    req#25 close
    req#23 error
    req#23 close
    req#21 error
    req#21 close
    req#19 error
    req#19 close
    req#17 error
    req#17 close
    req#15 error
    req#15 close
    req#13 error
    req#13 close
    req#11 error
    req#11 close
    req#9 error
    req#9 close
    req#7 error
    req#7 close
    req#5 error
    req#5 close
    req#3 error
    req#3 close
    req#1 error
    req#1 close
    done=31 sent=30
    assert.js:80
      throw new AssertionError(obj);
      ^
    
    AssertionError [ERR_ASSERTION]: timeout on http request called too much
        at process.<anonymous> (/home/iojs/build/workspace/node-test-commit-plinux/nodes/ppcle-ubuntu1404/test/parallel/test-http-client-timeout-agent.js:94:10)
        at process.emit (events.js:187:15)

/cc @nodejs/platform-ppc

[MylesBorins]

Run CI one more time to be safe

https://ci.nodejs.org/job/node-test-pull-request/13664/

ppc once more; https://ci.nodejs.org/job/node-test-commit-plinux/16045/

[MylesBorins]

Extra PPC test passed. The failing ppc test for V8-CI is expected

Landed in 040dd24