Fixed most compiler warnings.
Corrected linking.
Added hash table usage debugging method.
Removed some unnecessary 'virtual' specifiers.
Ensure the bitmask array always has at least 8 bytes.
Bugfix in hash() definition to use all 8 bytes, not just the first byte.
Switching to the packed array representation from the packed linked list
representation for scores speeds up the training a fair bit at the cost
of RAM.
Merge branch '00-fix-warnings'
Switched the depparser default hashtable table size to be a prime
number.