Fix drawing of map items that span across dateline
Fix drawing of map items that span across dateline

Apply wrapping to map mercator coordinates when needed
so that proper screen positions are returned.

Task-number: QTBUG-24918
Change-Id: If48ef2564f76604f2f44601b3969d77cbe138566
Reviewed-by: David Laing <7ea5e41bbea500042c0bdf1932c62d87625bf4ac@nokia.com>
Reviewed-by: Alex Wilson <75fe28a89a52dd8f665f8aed10f0a66d41b4f1d0@nokia.com>

amccarthy/qtlocation,kobolabs/qtlocation,kobolabs/qtlocation,amccarthy/qtlocation,amccarthy/qtlocation,kobolabs/qtlocation