Revision control

++ Qt 5.5.1 is a bug-fix release. It maintains both forward and backward
++ compatibility (source and binary) with Qt 5.5.0.
++
++ For more details, refer to the online documentation included in this
++ distribution. The documentation is also available online:
++
++
++ The Qt version 5.5 series is binary compatible with the 5.4.x series.
++ Applications compiled for 5.4 will continue to run with 5.5.
++
++ Some of the changes listed in this file include issue tracking numbers
++ corresponding to tasks in the Qt Bug Tracker:
++
++
++ Each of these identifiers can be entered in the bug tracker to obtain more
++ information about a particular change.
++
++ ****************************************************************************
++ * Library *
++ ****************************************************************************
++
++ QtLocation
++ -----------
++
++ - Fixed change signal emission for Map.activeMapType property.
++ - Improved places-list and places-map examples.
++ - [QTBUG-47188] Fixed incorrect naming of OSM plugin's parameter.
++ The documentation mandates the osm prefix which was not used in
++ the case of the geocoding.host, useragent and routing.host parameters.
++ The required osm.places.host parameter was not handled at all.
++ - [QTBUG-47322] Added support for zoom level 19 to OSM plugin.
++ - Fixed an issue where the incorrect prefetch algorithm was used for map
++ tile fetching.
++
++ QtPositioning
++ -------------
++
++ - Improved minor documentation issues.
++
++ ****************************************************************************
++ * Platform Specific Changes *
++ ****************************************************************************
++
++ Windows
++ -------
++
++ - Added missing QtQuick.Controls import to mapviewer example.
++
++ Linux/gcc
++ ---------
++
++ - [QTBUG-47427] Fixed compile issue in geoclue plugin when using gcc 4.5.