Fix static builds on Mac.

QMacPasteboardMime is a public class in Qt 4. Qt 5 has
two copies, one public QtMacExtras and an internal
one in the cocoa plugin. This causes a symbol collision
when building statically.

Rename the internal copy to QMacInternalPasteboardMime.

Task-number: QTBUG-35310
Change-Id: I891787b451a0b342ed85aa7196e606bc11623e21
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Fix [Linux]/[Linuxfb] screen initialization.

For the linuxfb platform the screen was registered
before its geometry was calculated resulting that
the qpa controller will deal with a screen instance
that has geometry of QRect(0,0,1,1) .
This masks pretty much all the painting and the input.
The fix is to call screen init before registering
the screen instance to the qpa controller.

Change-Id: If84daca6587dc368301b578cdbf7b2a65a56a5b5
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>