This is a reland of 9701d4a4
with a small fix for some code landed in between the dry-run and
submission.

Original change's description:
> [base] Move most of src/numbers into base
>
> Moves all but conversions.*, hash-seed-inl.h and math-random.* into
> base, in preparation for moving the parts of conversions that don't
> access HeapObjects.
>
> Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.
>
> Bug: v8:11917
> Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Auto-Submit: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75354}

Bug: v8:11917
Change-Id: Ie1ec9032fe56646a7c7303185cecc70fce5694ae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2982607Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75368}

This reverts commit 9701d4a4.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac64/40802/overview

Original change's description:
> [base] Move most of src/numbers into base
>
> Moves all but conversions.*, hash-seed-inl.h and math-random.* into
> base, in preparation for moving the parts of conversions that don't
> access HeapObjects.
>
> Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.
>
> Bug: v8:11917
> Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Auto-Submit: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75354}

Bug: v8:11917
Change-Id: Iacf796c95256016fa74f0a910c5bb1a86baa425a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2982605
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75356}

Moves all but conversions.*, hash-seed-inl.h and math-random.* into
base, in preparation for moving the parts of conversions that don't
access HeapObjects.

Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.

Bug: v8:11917
Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75354}

The adding of base:: was mostly prepared using git grep and sed:
git grep -l <pattern> | grep -v base/vector.h | \
  xargs sed -i 's/\b<pattern>\b/base::<pattern>/
with lots of manual clean-ups due to the resulting
v8::internal::base::Vectors.

#includes were fixed using:
git grep -l "src/utils/vector.h" | \
  axargs sed -i 's!src/utils/vector.h!src/base/vector.h!'

Bug: v8:11879
Change-Id: I3e6d622987fee4478089c40539724c19735bd625
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2968412Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75243}

TBR=mvstanton@chromium.org,neis@chromium.org,ahaas@chromium.org

Bug: v8:9247
Change-Id: I5433c863a54f3412d73df0d38aba3fdbcfac7ebe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627973
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61830}

New code should use nullptr instead of NULL.

This patch updates existing use of NULL to nullptr where applicable,
making the code base more consistent.

BUG=v8:6928,v8:6921

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I4687f5b96fcfd88b41fa970a2b937b4f6538777c
Reviewed-on: https://chromium-review.googlesource.com/718338
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48557}

Embedders still can use those APIs by default

test-api.cc still has an exception to use the old APIs...

BUG=v8:4143
R=vogelheim@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1505803004

Cr-Commit-Position: refs/heads/master@{#32701}

BUG=4134
R=epertoso@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1451733002

Cr-Commit-Position: refs/heads/master@{#32011}

When compiling on a laptop I like to concatenate the small test files.
This makes a big difference to compile times. These changes make that
easier.

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1163803002

Cr-Commit-Position: refs/heads/master@{#28742}

- this avoids using relative include paths which are forbidden by the style guide
- makes the code more readable since it's clear which header is meant
- allows for starting to use checkdeps

BUG=none
R=jkummerow@chromium.org, danno@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/304153016

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1956005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1968003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1865001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4591 ce2b1a6d-e550-0410-aec6-3dcde31c8c00