[Icon] image path is not correctly resolved if used from within a qrc file

[Michael Zanetti]

If writing an application and putting all the QML files into a qrc file (I know, its discouraged, still, Qt supports it so it should work I'd say) the Icon {} component does not correctly resolve the paths to the image files.

Qt seems to have a mechanism that it always searches for icons in the current scope. That means, if having a QML file in a qrc and referring to an image with "/path/to/image.png" it actually resolves it as "qrc:///path/to/image.png". There is still the possiblity to directly point to the icon on disk using "file:///path/to/image.png".

The Icon component seems to suffer from this by not specifying the file:// uri scheme and the image gets searched only in the qrc. file. The Icon component should most likely always point to file:// when resolving images.