Bugfixes in lattice-to-post; merging latest changes from trunk.

egs/rm/s1/run.sh

egs/rm/s1/scripts/add_lex_disambig.pl

egs/rm/s1/scripts/int2sym.pl

egs/rm/s1/scripts/make_lexicon_fst.pl

egs/rm/s1/steps/decode_tri1_latgen.sh

egs/rm/s1/steps/prepare_graphs.sh

egs/rm/s1/steps/train_sgmma.sh

egs/rm/s1/steps/train_sgmmb.sh

egs/rm/s1/steps/train_sgmmc.sh

egs/rm/s1/steps/train_sgmmd.sh

egs/rm/s1/steps/train_sgmme.sh

egs/rm/s2/run.sh

egs/rm/s2/scripts/gen_mlp_init.py

egs/rm/s2/scripts/shuffle_list.pl

egs/rm/s2/steps/decode_mono.sh

egs/rm/s2/steps/decode_nnet_mono_pdf.sh

egs/rm/s2/steps/decode_nnet_mono_trans.sh

egs/rm/s2/steps/decode_nnet_tri2a_s1a.sh

egs/rm/s2/steps/decode_nnet_tri2a_s1b.sh

egs/rm/s2/steps/decode_nnet_tri2a_s2.sh