Report keyboard modifiers in evdevmouse

Mouse and wheel events have no modifiers set. This is not ideal.
Pass at least QGuiApplication::keyboardModifiers() to get the
modifiers from the last key event.

Task-number: QTBUG-39812
Change-Id: Ica0c338c60c3e289dccfafa5aa6d602d4e111ad5
Reviewed-by: Leonard Lee <leonard.lee@digia.com>
Reviewed-by: Will Wagner <willw@carallon.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Add support for initializer_list construction in QFlags

[ChangeLog][QtCore][QFlags] Added initializer_list constructor

Task-number: QTBUG-39786
Change-Id: I36967c67b489c2a893fb031954f46f5243aba2c4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>