QList: add missing reserve() call in the initializer_list ctor

Change-Id: Idc46a347009556d06db4bc1f7ce3e2613fb1a405
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Add QFont strategy to disable subpixel antialiasing

This patch adds the option to disable subpixel antialiasing on QFont
basis. This can be useful when painting to offscreen surfaces. On OS X
this option disables the aggressive LCD font smoothing, which can be
necessary for certain fonts it may otherwise ruin.

Task-number: QTBUG-40396
Change-Id: I1664b636520ae63ee1503b5df7436748106b9f5c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>