`TLSSocket` wraps the original `net.Socket`, but writes/reads to/from
`TLSSocket` do not touch the timers of original `net.Socket`.

Introduce `socket._parent` property, and iterate through all parents
to unref timers and prevent timeout event on original `net.Socket`.

Fix: #9242
PR-URL: nodejs/node#891
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

node::Environment isn't accessible to user APIs, so extend smalloc to
also accept v8::Isolate.

Fixes: 75adde0 "src: remove `node_isolate` from source"
PR-URL: nodejs/node#905
Reviewed-by: Fedor Indutny <fedor@indutny.com>

Original commit message:

  Fix --max_old_space_size=4096 integer overflow.

  BUG=v8:3857
  LOG=N

  Review URL: https://codereview.chromium.org/897543002

  Cr-Commit-Position: refs/heads/master@{#26510}

PR-URL: #9200
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-by: Julien Gilli <julien.gilli@joyent.com>

Currently, lib/_tls_legacy.js and lib/crypto.js cannot be loaded when
--use-strict is passed to node. In addition to that, console.trace
throws because it uses arguments.callee.

This change fixes these issues and adds a test that makes sure
every external built-in module can be loaded with require when
--use-strict is enabled.

Please note that this change does not fix all issues with built-in
modules' code running with --use-strict. It is very likely that some
code in the built-in modules still fails when passing this flag.

However, fixing all code would require us to enable strict mode by
default in all builtins modules, which would certainly break existing
applications.

Fixes #9187.