Merge pull request #136 from bastih/master

Some cleanups
Remove allocator template from Table (WIP)
Remove allocator template from RawTable
Move RawTable implementation to .cpp
Remove table-impl.h
Remove Strategy template parameter from attribute vectors
Remove Allocator template parameter from dictionaries
Remove Strategy from TableFactory
Remove deprecated strategized TableGenerator method
Remove default_strategy.h
Remove most of libmemory and all of units_memory