Addresses code review comment.

This addresses code review comments.

chore(linux): Split startup process

auto: increment master version to 17.0.175

refactor(linux): Reformat file

This change improves the startup method so that it will also work
if ibus hasn't started yet. Also fixes two memory leaks.

auto: increment master version to 17.0.174

chore(common): Update to Unicode 15.1

Update to Unicode 15.1 characters from https://www.unicode.org/Public/15.1.0/ucd/

auto: increment master version to 17.0.173

chore(linux): Exclude environment.sh from build

`environment.sh` is used only on Mac. This change modifies `build.sh`
to generate this file only when building on Mac. It also excludes
`environment.sh` from the Linux source tarball.

fix(linux): Prevent exception if neither USER, LOGNAME nor SUDO_USER set

Closes #9542.

auto: increment master version to 17.0.172

chore(linux): Add `clean` target to `rules`

auto: increment master version to 17.0.171

This allows to completely cleanup after a package build. Also fixes
`keyman-config/build.sh` to do a better job with clean.

Fixes #9518.

docs(linux): Explicitly specify emscripten version

fix(common): builder_parse broke on option parameters

auto: increment master version to 17.0.170

emscripten 3.1.44 works, but 3.1.45 fails, so this change modifies
the documentation to explicitly request `3.1.44` instead of `latest`.

fix(linux): Fix exception in km-kvk2ldml

auto: increment master version to 17.0.169

This change fixes an exception that occurs if the user specifies
an outputfile in a non-existing directory. Also catch several other
related exceptions.

Fixes #9522.

refactor(linux): Fix warning

Follow-up of #4999 (which mentions different warnings). This
change fixes other warnings that we were still getting.

auto: increment master version to 17.0.168

feat(resources): add pcm keyboard 🙀