GitLab

trunk: documentation improvements; add program that was missing from repo (est-pca); some updates to nnet2 recipes to use new, faster versions of the training scripts

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4089 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8