- removed tree data type in kelondroHTCache
- added new class kelondroHeap; may be the core for a storage object that will once replace the many-files strategy of kelondroHTCache
- removed compatibility mode in indexRAMRI
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4747 6c8d7289-2bf4-0310-a012-ef5d649a1542