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Closes #10901

Seems all videos use player V5 syntax now

Now Vimeo Review videos uses React. Thanks @davekaro for analyzing the
problem!

After switching to HTML5 extraction helpers in generic.py, the result
info_dict is always a playlist.

I change the URL of the third test case, because now the original URL
does not contain a video anymore, and there's no easy to get the real
URL from the /film/ one.

Shell assignment operator in BSD make != is ported to GNU make in
version 4.0, so 3.x doesn't work. I choose to drop BSD make support as
installing GNU make on *BSD systems is easier than installing newer GNU
make.

[ci skip]

According to the dump file in #10846, handleServerJS() now accepts
an optional second argument. It's a string from available dump files.

And use _generic_* helpers in those extractors

This reverts commit 831a34ca.

The reverted commit breaks lazy extractors.

Closes #9387

The shell assignment operator != was introduced in GNU make 4.0, or
specifically the commit in [1]. This fix removes such usages and
fallback to a more portable syntax. Tested with:

* GNU make 3.82 on CentOS 7.2
* bmake 20150910 on CentOS 7.2, source RPM from Fedora 24 [2]
* GNU make 4.2.1 on Arch Linux (Arch official package)
* bmake 20160926 on Arch Linux (Arch official package)
* GNU make 3.82 on Arch Linux (Compiled from source)
* Apple bsdmake-24 on macOS Sierra, binary package from Homebrew

Thanks @bdeyal for the feedback of the first tests

[1] http://git.savannah.gnu.org/cgit/make.git/commit/?id=b34438bee83ee906a23b881f257e684a0993b9b1
[2] http://koji.fedoraproject.org/koji/buildinfo?buildID=716769

Legal name change!