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 ... and make that available through the targetsettingswidget,
 too.

Reviewed-by: con

Reviewed-by: Robert Loehning

 * ... and use it.

thus fixing the exit warning:
"~QX11PixmapData(): QPixmap objects must be destroyed..."

Acked-by: con

 * Ease cross device development by introducing 'targets' which
   group build- and runsettings that are valid for this one target

 Most of the kudos for the code review go to dt. Con, thorbjorn,
 ckandler and others did also review parts of this patch.

Reviewed-by: dt