experiment in dynamic repacement of Text and Background
colors, in order to be able to generate icons of different colors
based on where they are (for instance if the normal background
is dark and the button background is light
at the moment supported an option to invert colors, one
to use the "highlight" color (if we want colored icons
on mouse over)
now is actually possible to obtain a startup with zero svg renderers
* svg::isValid will create a renderer only if really nevessary
* the rects cache is ensured to be written on disk
* fixed the check on the theme metadata age
* rect cache is shared between all applications
This removes the last dependency from plasma-framework on kde4support.
This change is a bit more involved than other kde4support removals because
QSharedPointer does not provide a count() method. I therefore reworked the code
to store the SharedSvgRenderer as a QWeakPointer in s_renderers, making it
possible to detect when the last one goes away by creating a QWeakPointer guard
in SvgPrivate::eraseRenderer().
REVIEW: 114912
All cpp code moves into the src/ subdirectory, as the Frameworks policy
suggests.
Directory structure should now be in line with other, future frameworks.
