Android: Use java.util.Random in qrand()

Android does not provide rand_r(), so we would fall back to rand()
and srand() which means we where not keeping the promise of qrand
and qsrand being thread-safe. As a replacement we can use the Java
api and have one Random object for each thread.

Task-number: QTBUG-32814
Change-Id: Id46d195a0bb122bc7a5a8de43bdf088e11a9c42e
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
QLocale - Mac fix typos in comments

Fix some typos in the comments.

Change-Id: I14eed0ffed74f0a60b05441430158f71cb530c01
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>