Fix bootstrapped build of QCoreApplication

696060134d10d44175970ffd38618544ecdd9387 introduced the use of
QBasicMutex and QMutexLocker (qmutex.h) but that wasn't #included. I
don't know in what way my build is different, though.

Change-Id: Ie3df3c746fdf1c4735f298c3578cd93a9a14327e
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Fix grammar in QScopedPointer.

have => has

Change-Id: Ib77110b8ffd2f970e15c2159480e56be9ef964ca
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Fix check in texture cleanup code

Change-Id: Iaf91cf27d64aedb71a8af7ba318ff1231ff11b0d
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
evdevtouch: Do not print device information by default

Do it only when requested by having QT_QPA_EVDEV_DEBUG set.

Change-Id: I0e28808ae972bf681db3c0878ee53732611d11af
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>