Fix reading palette images in DDS handler.

Change-Id: I039a5f3376a8ebe7230f30a0df31c4a355f22349
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Alex Char <prevedtest@gmail.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Refactor ICNS plugin to prepare it for icon variants support

Change-Id: I8bc799ade204072bdc169180154c2c2b021fd44e
Reviewed-by: Ivan Komissarov <ABBAPOH@me.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Bump MODULE_VERSION to 5.2.2

Change-Id: Ibafe0f44c0235517bf8b7ac85f4baa2d3a728f34
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Merge remote-tracking branch 'origin/stable' into dev

Conflicts:
	.qmake.conf

Change-Id: I2268e648a3d65f8ff6dbc0e954e0729a2e751664