this ports most of libplasma away from sycoca, using instead
a combination of KPluginLoader and KPackage::PackageLoader instead
(so eventually using their own little caches instead of the
global sycoca cache)
a kservicetypetrader call is left in the loading of
containmentactions since is the only way to make an older
workspace still work, but is only a fallback, so containmentactions
in plasma-workspace can be ported eventually as well
Change-Id: Ie9579c3e01284f6d97043e22d01bbe63d3c3f45a
REVIEW:123626
Plasma::Package internally uses KPackage, being a pure wrapper.
old client code and old packagestructures still work using the wrapper.
old workspace code that is not directly using kpackage continues to work correctly
Change-Id: I05f95e8d05e3b67759973c4009e3753c61b1dcce
All cpp code moves into the src/ subdirectory, as the Frameworks policy
suggests.
Directory structure should now be in line with other, future frameworks.
