Fix encoding of localized messages

QDebug::operator<<(const char*) uses QString::fromUtf8(), while
qPrintable(str) returns QString::toLocal8Bit(). This messes up e.g. the
Russian translations.

Task-number: QTBUG-35825
Change-Id: Ib3f0004df677196a0bd17ac48c65f2d51b833044
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Revert "Dynamic GL support in Quick1's ShaderEffectSource"

Will need to change to QOpenGLContext::currentContext()->isES()
once the qtbase changes are in.

This reverts commit 3eeaf987123f73ad7a4745745d9e7c70f30942cd.

Change-Id: I7ac8718bc07cbcbaefe1633856722ae402078112
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>