Add `builder_describe_platform` function to builder.inc.sh, associated
documentation and unit test, and use it in Developer and Common build
scripts.
Relates-to: #11755
Previously with the right number of parameters that take values and the
right order it could happen that a parameter value got replaced by an
action when the script output the parameters. This change fixes this.
Fixes: #11676
Note: there is a bit of potential confusion about the difference between
/resources/builder.inc.sh (the full implementation for builder scripts),
and /resources/build/builder.inc.sh (the source script that builder
scripts should always use).
This allows us to make assumptions that will always be true for builder
scripts that may not be true for other scripts, such as setting base
folder.
Fixes#11324.
* Always `cd "$THIS_SCRIPT_PATH"`
* Remove unnecessary `cd` from all build.sh
* Remove unnecessary `set -eu` from all build.sh (and `# set -x`)
* Replace old build-utils.sh incantation in a few build.sh scripts
Fixes#10957. The builder --debug flag appears to be passed correctly,
according to this test. This is a good test to keep, so won't remove it,
but there is something else going on in the base test.
This sets us up to run all common/ and resources/ tests from a single
script, common/build.sh. This test will be run on each platform for all
changes made in common/ or resources/.
Also renamed files and paths for consistency in resources/ and updated
tests accordingly.
