This also lets ant print a message pointing to this artifact and
explaining the files inside briefly. To make sure this is only printed
inside the github action, an extra `-D` option is passed to `ant test`
from the workflow file.
To allow `if` / `unless` on the echo element, this adds some namespace
definitions (this allows them on *any* element, not just the ones that
explicitly allow it). See https://ant.apache.org/manual/ifunless.html
This allows running an individual test class by specifying
-Dsingle-test-class=path.to.Classs and methods within the specified
class by specifying -Dsingle-test-methods=testMethod1,testMethod2.
Additionally, this improves the error output, but not showing full
stderr/stdout output when running the full test suite, and by generating
a browsable HTML report with test results (including stdout/stderr
output). When single-test-class is used, detailed output (including
stdout/stderr) is still printed directly.
This also moves the test result XML files into a subdirectory for
clarity, which is removed before starting a testrun (so the HTML report
does not include older test results).
Wrapped the every string literals with _(...) function.
The _() function resides in "app/src/processing/app/I18n.java",
which translates the UI texts using "Resources_XX.properties" file
where XX is the locale code.
I provided the properties file for the ja (Japanese) locale.
I created this file using "xgettext" and "msgcat" commands.
"i18n_update.{py,sh}" files are the tool I used to do that.
Change in "app/build.xml" is to include the properties files
in jar file.
