Create QString at compile time using the literal operator""s instead of
using pointer to characters. This way, no conversion or allocation will
occur at runtime.
Task-number: QTBUG-117425
Pick-to: 6.6 6.5
Change-Id: I2a19d4fe1150aad7908d0c2a7215099bc0814e8d
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>