trunk: Merging in i-Vector language identification updates from sandbox/language_id.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4692 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: Merging in i-Vector language identification updates from sandbox/language_id. Missing egs/lre07/v1 in Previous commit.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4693 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: Small fix to logistic-regression-eval binary.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4694 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: Removing binary lattice-to-ngram-counts.cc from latbin that was accidently added along with merge from sandbox/language_id

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4695 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: miscellaneous nnet2 script fixes.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4696 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8