Co-authored-by: Marc Durdin <marc@durdin.net>

Page was only applicable to Win 7

chore(linux): Don't fail on parallel builds

feat(common): marker processing🙀

feat(developer) marker steps 🙀 

Co-authored-by: Marc Durdin <marc@durdin.net>

auto: increment master version to 17.0.151

If another build runs on the same build agent at the same time and
installs dependencies at the same time, previously the build failed
because apt/dpkg was already running. This change checks for the
existence of the apt/dpkg lock file and waits until the other process
is finished before starting the installation of dependencies.

chore(linux): Fix creation of PRs after uploading to Debian

chore(linux): Update debian changelog 🍒

auto: increment master version to 17.0.150

- upstream in CLDR is incomplete in marker/transform implementation, disabling for now

#9119

- verified sentinel in the binary output

#9119

- bunch of rework to make 'vars' a dependent of lots of sections
- should be emitting marker ids in the output stream now.

#9119

chore(core): update documentation in transform logic and processor 🙀

fix(core): Better range check for Uni_IsValid() 🙀

#9119

#9119

- constants need to be shared with C++

#9119

- common: emit the sentinel value, with range checking, from MarkerParser

- a falsy list should show up as list #0

#9119

- .. and the basic.txt to prove it

#9119

- split out MarkerTracker, could give us more precise messages about marker use
- for now, we parse all markers twice.
- update builder for the markers list

#9119

Co-authored-by: Marc Durdin <marc@durdin.net>

- review comments

#7375

- was using the wrong syntax, hyphen instead of underscore

#9119

(cherry picked from commit 0e74e37a)

auto: increment master version to 17.0.149

chore(linux): Update supported Ubuntu versions

- wip , still not working

For: #9119