closes nodejs/nodejs.org-archive#77

PR: #9172
PR-URL: #9172
Reviewed-By: Julien Gilli <julien.gilli@joyent.com>

In the documentation for querystring.parse, the documentation mentions
that the default value for options.decodeURIComponent is the
decodeURIComponent function, but it's actually the querystring.unescape
function.

PR-URL: #9259
Reviewed-by: Julien Gilli <julien.gilli@joyent.com>

 - add an article: `decode a non-utf8 string`
 - explain default and fallback behaviour of `querystring.unescape`

PR-URL: #9259
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.

Reviewed-By:
PR-URL: #9237