Gradle prints only failed tests, so the live test tree only filled in
after the run from the XML reports, and stayed empty when the test task
was UP-TO-DATE and wrote no new reports.
Gradle test runs now get an init script that reports each test's start,
output, failure (with the stack trace), skip and finish as TeamCity
service messages and keeps test tasks from being UP-TO-DATE. The console
hides those lines; the JVM parser turns them into `[class, method]`
results, named as in the XML reports, and drops Gradle's own repeated
`Class > test() FAILED` lines. Tests the run already reported keep their
output instead of getting the report's copy appended. The TeamCity
message parsing moves out of the PHPUnit parser so both share it.
Fixes#1268