[KPhotoAlbum] gps search: a patch

[Reimar Imhof]

Hallo,

here you'll find a patch for a simple gps search.

It's included in the search dialog. The map comes up in standard pan mode - 
you can change that to region selection.

If you select a region you'll get images with gps coordinates in that region. 
Images without gps info will not be found.

If you want to select images without gps info or don't care about gps you just 
don't need to select a region. Or you could press the new "Remove Search 
Region" button.

There is one little problem in
KGeoMap::GeoCoordinates DB::ImageInfo::coordinates() const
This runs an exifdb update if it's not version 2.
This update just takes a little time. That's why the first search including 
gps info might take some time. And there is no search progress bar...


Enhancements are welcome.

Reimar

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