build: do not generate support for libuv's probes

Dtrace probes were removed from libuv recently, but their usage by node
was not completely removed, causing build breaks on SmartOS.

Even though the build is working on other platforms, these probes are
not fired by libuv anymore, so there's no point in using them on these
platforms too.

Reviewed-by: Trevor Norris <trev.norris@gmail.com>
deps: update libuv to 1.0.2

PR-URL: https://github.com/joyent/node/pull/8847
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
test: mark more tests as flaky

Marking these two tests as flaky, since they have been failing
intermittenly in recent builds:
test-debug-signal-cluster
test-cluster-basic
build: i18n: Autodownload ICU, Add a test.

This is to implement
https://github.com/joyent/node/issues/7676#issuecomment-64704230

* make `--with-intl=none` the default
 * Download, verify (md5), unpack ICU's zip if not there
 * update docs
* add a test

There's a "list" of URLs being used, but right now only the
first is picked up. The logic works something like this:

* if there is no directory `deps/icu`,
 * if no zip file (currently `icu4c-54_1-src.zip`),
  * download zip file (icu-project.org -> sf.net)
 * verify the MD5 sum of the zipfile
  * if bad, print error and exit
 * unpack the zipfile into `deps/icu`
* if `deps/icu` now exists, use it, else fail with help text

Also:
* refactor some code into tools/configure.d/nodedownload.py
* add `intl-none` option for `vcbuild.bat`

To rebuild `deps/icu-small` - (not currently checked in)
```
bash tools/icu/prepare-icu-source.sh
```

Reduce space by about 1MB with ICU 54 (over without this patch).
Also trims a few other source files, but only conditional on the exact ICU
version used. This is to future-proof - a file that is unneeded now may
be needed in future ICUs.
build: i18n: add `configure --with-icu-source=...`

Usage:
 * `--with-icu-source=/path/to/my/other/icu`
 * `--with-icu-source=/path/to/icu54.zip`
 * `--with-icu-source=/path/to/icu54.tgz`
 * `--with-icu-source=http://example.com/icu54.tar.bz2`

this fixes srl295/node#11
build: i18n: add   --with-icu-locales option

this lets you choose which locales are used in the `small-icu` case

Example:

  configure --with-intl=small-icu  --with-icu-locales=tlh,grc,nl

Note that the unit test tests/simple/test-intl.js hasn't been updated
yet.

(Also note that as of this writing, neither Klingon nor Ancient Greek
are in upstream CLDR data. Serving suggestion only.)

This completely and totally fixes #10 :octocat: