Script changes (esp. RE SGMMs).

egs/rm/s1/run.sh

egs/rm/s1/steps/decode_tri1_fmllr.sh

egs/rm/s1/steps/decode_tri1_regtree_fmllr.sh

egs/rm/s1/steps/init_sgmm.sh

egs/rm/s1/steps/train_sgmma.sh

egs/rm/s1/steps/train_sgmmb.sh

egs/rm/s1/steps/train_tri1.sh

egs/rm/s1/steps/train_tri2a.sh

egs/rm/s1/steps/train_tri2b.sh

egs/rm/s1/steps/train_tri2c.sh

egs/rm/s1/steps/train_tri2d.sh

egs/rm/s1/steps/train_tri2e.sh

egs/rm/s1/steps/train_tri2f.sh

egs/rm/s1/steps/train_tri2g.sh

egs/rm/s1/steps/train_tri2h.sh

egs/rm/s1/steps/train_tri2i.sh

egs/rm/s1/steps/train_tri2j.sh

egs/rm/s1/steps/train_tri2k.sh

egs/rm/s1/steps/train_tri2l.sh

egs/rm/s1/steps/train_ubma.sh