Build simpleservo on Windows
The mozangle change means that we don't rebuild mozangle (and transitively script) because the requested features are different when building libsimpleservo.
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Reintroduce parallelism in the bluetooth tests
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With https://github.com/web-platform-tests/wpt/pull/16819 in place, https://github.com/servo/servo/issues/22619 should be fixed, so the changes introduced by https://github.com/servo/servo/pull/22662 can be reverted.
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
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Fix nightly WPT sync job
These changes were tested by triggering the daily hook with a branch that included them, and they caused #23433 to be opened successfully.
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Add gst-plugins-bad homebrew formula that enables webrtc.
This forks the upstream homebrew formula for gst-plugins-bad and re-adds two important (previously optional) dependencies. It also adds a script to regenerate the formula from upstream to make it as easy as possible to update gstreamer in the future.
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Build Linux Nightly with OpenSSL 1.1.0
Servo Nightly fails to run on Ubuntu 19.04 (disco) as it doesn't have a libssl1.0.0 package.
OpenSSL 1.1.x is supported since [Debian Stretch](https://packages.debian.org/en/stretch/libssl1.1) (currently Debian Stable) and [Ubuntu 18.04](https://packages.ubuntu.com/bionic/libssl1.1) (used by base.dockerfile).
Ancient Debian + Ubuntu releases are still able to compile Servo using their most recent OpenSSL (1.0.x).
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#12015, fix#21778 and fix#22110
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