Remove the ARCH_FULL output from config.tests/arch

The next commit will add something to ARCH_FULL that requires
qconfig.h. That means we can't extract the full info until qconfig.h is
created, which hasn't happened yet at the time that config.tests/arch is
compiled.

Change-Id: Icbbd8c448423a93296a986ede3771e82e4d61e07
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Add the -qreal option to the Qt ABI information

If -qreal float is passed, fullCpuArchitecture() will now include
"-qreal_float". If something else other than "float" is passed to
-qreal, we'll try to encode it (e.g., -qreal "fixed<int, 7>").

Change-Id: Ie33fd1a643f4376e6f01a7966e01c7c34e6fcffd
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Accessibility Linux: Act more like Gtk for key presses

Orca is extremely picky when it comes to key presses and modifiers.
Sending ctrl as modifier for itself for example seems to break things.
Also use the ATSPI modifier constants, weird as they are.

Task-number: QTBUG-39361
Change-Id: Id809e0dd2a7d20a533bd783888ccbdf748becacc
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>