When running a test under increased verbosity levels, QTestLib would
print "failure location" for every QTest function (QVERIFY, QCOMPARE,
...), even if there's no failure at all.
Keep the code centralized, but split the formatting of failures and
non-failures (other messages).
Task-number: QTBUG-96844
Change-Id: I3c508653176b68579dc0eb0cffcc153a52da2e2c
Pick-to: 5.15 6.2 6.3
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
a605b9297d