Moved C++ code into its own Library; removed dependency on Bob

bob/learn/mlp/cxx/backprop.cpp

bob/learn/mlp/cxx/cross_entropy.cpp

bob/learn/mlp/cxx/machine.cpp

bob/learn/mlp/cxx/rprop.cpp

bob/learn/mlp/cxx/shuffler.cpp

bob/learn/mlp/cxx/square_error.cpp

bob/learn/mlp/cxx/trainer.cpp

bob/learn/mlp/include/bob.learn.mlp/api.h

bob/learn/mlp/include/bob.learn.mlp/backprop.h

bob/learn/mlp/include/bob.learn.mlp/cost.h

bob/learn/mlp/include/bob.learn.mlp/cross_entropy.h

bob/learn/mlp/include/bob.learn.mlp/machine.h

bob/learn/mlp/include/bob.learn.mlp/roll.h

bob/learn/mlp/include/bob.learn.mlp/rprop.h

bob/learn/mlp/include/bob.learn.mlp/square_error.h

bob/learn/mlp/include/bob.learn.mlp/trainer.h

bob/learn/mlp/version.cpp

buildout.cfg

setup.py