Changed a couple of especially verbose messages to VOLT_TRACE
Added a FullBackingStoreException for alerting when writing to a full AntiCacheDB
* Moved LRU functions to CPP file. They are too much to inline. * Added comments to header file
Changed especially verbose message to VOLT_TRACE
Added a better chooseDB method. It starts at the highest level, looks for correct blocksize and checks the capacity.
Added check for capacity on writes and throw FullBackingStoreException
Test for FullBackingStoreException/chooseDB