Changes made since version 1
============================
  + Important fact:
    - !!! WARNING !!! The library is now completely embedded
      in the namespace Torch.

  + Main bugs corrected:
    - PolynomialKernel
    - IOTorch sparse
    - MultiClassFormat::toOneHot
    - the shift computation in Softmax
    - the end criterion in StochasticGradient
    - the reverseSparseMemory() function doesn't exist anymore

  + New features:
    - Makefile and Makefile_options changed (in Torch/config and Torch/kernel)
    - the options in Object have been improved
    - REAL_EPSILON value in general.h
    - MSTDVSparseNormalize in normalize.h
    - some functions for strings in string_utils.h
    - some functions in log_add.h

  + New classes:
    - WeightedSumMachine
    - Bagging
    - Boosting
    - BoostingMeasurer
    - MultiCriterion
    - SparseDataSet
    - FileSparseDataSet
    - SparseLinear
    - LogSoftmax
    - ClassLLCriterion
