Issue 5133 - add CI for libadblockplus

# Having this in the main repo will not only build 'master' of libadblockplus when we push some changes, it will also simplify the development process. Right now one has to apply this patch each time before creating or updating a codereview, with this patch this step will disappear.

[sergei, 2017-07-26 12:52:52]

https://codereview.adblockplus.org/29498563/diff/29498564/.travis.yml
File .travis.yml (right):

https://codereview.adblockplus.org/29498563/diff/29498564/.travis.yml#newcode24
.travis.yml:24: -
URL_PREFIX=https://github.com/xxxz/v8-binaries2/releases/download/v1/
This URL will be changed, see similar comment for appveyor.

https://codereview.adblockplus.org/29498563/diff/29498564/.travis/prepare-pre...
File .travis/prepare-prebuilt-v8.sh (right):

https://codereview.adblockplus.org/29498563/diff/29498564/.travis/prepare-pre...
.travis/prepare-prebuilt-v8.sh:14: PREBUILT_V8_ARCHIVE=u14.04-x64-debug.tar.xz
Travis-CI runs ubuntu 14.04 which seems does not support some C++11 features,
therefore it is necessary to compile binaries on ubuntu-14.04 because otherwise
linker cannot find symbols (std::__cxx11::...). They simply absent in the stdc++
of the same version on ubuntu 14.04 but present in later distribs. However one
can link this binaries on other versions of linux (at least tested on
ubuntu-16.04).

https://codereview.adblockplus.org/29498563/diff/29498564/appveyor.yml
File appveyor.yml (right):

https://codereview.adblockplus.org/29498563/diff/29498564/appveyor.yml#newcode19
appveyor.yml:19: URL_PREFIX:
https://github.com/xxxz/v8-binaries2/releases/download/v1/
This URL will be changed after hub:2317 and I will remove the binaries from
github. Meanwhile it's used to ensure that the everything does work.

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies
File dependencies (left):

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies#oldcode7
dependencies:7: third_party/v8 = v8-googlesource hg:b0526a8c076e
git:97fafa7b1c277bcc627495318fe309ba9c2e3081
Don't spend time on pulling v8 because we use prebuilt V8.

[hub, 2017-07-26 15:35:51]

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies
File dependencies (left):

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies#oldcode7
dependencies:7: third_party/v8 = v8-googlesource hg:b0526a8c076e
git:97fafa7b1c277bcc627495318fe309ba9c2e3081
On 2017/07/26 12:52:52, sergei wrote:
> Don't spend time on pulling v8 because we use prebuilt V8.

the problem is that this break local builds that expect to have it to build.

[sergei, 2017-07-26 15:44:40]

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies
File dependencies (left):

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies#oldcode7
dependencies:7: third_party/v8 = v8-googlesource hg:b0526a8c076e
git:97fafa7b1c277bcc627495318fe309ba9c2e3081
On 2017/07/26 15:35:51, hub wrote:
> On 2017/07/26 12:52:52, sergei wrote:
> > Don't spend time on pulling v8 because we use prebuilt V8.
> 
> the problem is that this break local builds that expect to have it to build.

Right :) I applied this commit each time for CI but we may not commit it.

However, I still think we should not fetch V8 each time when we don't need it,
it takes at least few minutes and for free CI where the builds run sequentially
it can significantly increase the building time. What about removing these lines
from CI config?

[hub, 2017-07-26 15:51:54]

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies
File dependencies (left):

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies#oldcode7
dependencies:7: third_party/v8 = v8-googlesource hg:b0526a8c076e
git:97fafa7b1c277bcc627495318fe309ba9c2e3081
On 2017/07/26 15:44:40, sergei wrote:
> On 2017/07/26 15:35:51, hub wrote:
> > On 2017/07/26 12:52:52, sergei wrote:
> > > Don't spend time on pulling v8 because we use prebuilt V8.
> > 
> > the problem is that this break local builds that expect to have it to build.
> 
> Right :) I applied this commit each time for CI but we may not commit it.
> 
> However, I still think we should not fetch V8 each time when we don't need it,
> it takes at least few minutes and for free CI where the builds run
sequentially
> it can significantly increase the building time. What about removing these
lines
> from CI config?

I'm ok with not fetching it when running on CI. Can we have "conditionals" with
ensure_dependencies? That's probably something we'd want to do.

[sergei, 2017-07-26 16:45:46]

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies
File dependencies (left):

https://codereview.adblockplus.org/29498563/diff/29498564/dependencies#oldcode7
dependencies:7: third_party/v8 = v8-googlesource hg:b0526a8c076e
git:97fafa7b1c277bcc627495318fe309ba9c2e3081
On 2017/07/26 15:51:53, hub wrote:
> On 2017/07/26 15:44:40, sergei wrote:
> > On 2017/07/26 15:35:51, hub wrote:
> > > On 2017/07/26 12:52:52, sergei wrote:
> > > > Don't spend time on pulling v8 because we use prebuilt V8.
> > > 
> > > the problem is that this break local builds that expect to have it to
build.
> > 
> > Right :) I applied this commit each time for CI but we may not commit it.
> > 
> > However, I still think we should not fetch V8 each time when we don't need
it,
> > it takes at least few minutes and for free CI where the builds run
> sequentially
> > it can significantly increase the building time. What about removing these
> lines
> > from CI config?
> 
> I'm ok with not fetching it when running on CI. Can we have "conditionals"
with
> ensure_dependencies? That's probably something we'd want to do.

ensure_dependencies.py does not support something like this, it can be only
globally disabled.
I have added a command removing lines containing "third_party/v8".

[hub, 2017-07-26 16:57:53]

LGTM

[sergei, 2017-08-09 08:03:17]

added arm64

[hub, 2017-08-09 12:51:36]

LGTM

[sergei, 2017-08-10 12:27:29]

add osx

[hub, 2017-08-10 12:44:34]

LGTM

[sergei, 2017-09-19 13:58:49]

It's just a notification of the change, despite it won't be included in the
final version because it affects only and exactly those URLs which will be
changed.
Since V8 had been updated I have prepared new binaries corresponding to the
currently used version of V8 because until the artifact server is not ready I'm
actually using this config.

[sergei, 2017-09-26 15:11:15]

It's ready to be pushed, the file server is here.

[hub, 2017-09-26 22:00:19]

LGTM