QCommandLineParser: remove unused member variable

Change-Id: I8f471112123fa9f90d2e64ace076fc5fd8cb550c
Reviewed-by: Laszlo Papp <lpapp@kde.org>
QCommandLineOption: use QLatin1Char (QT_NO_CAST_FROM_ASCII)

Change-Id: Ic6a932d79379326586ea14a3e1a1de948917e9b3
Reviewed-by: Laszlo Papp <lpapp@kde.org>
QCommandLineParser: recognise -> recognize, as spotted by sanity bot

Change-Id: Ib7e3dc2048af33032aa75f261bb6f546b679cbf5
Reviewed-by: Laszlo Papp <lpapp@kde.org>
QCommandLineParser/Option : fix crash when copying option objects; fix memleak.

Change-Id: Ida88f754dcd2bd7057b1442e3221bd8e9376aabf
Reviewed-by: Laszlo Papp <lpapp@kde.org>