Changes to copyright notices.

src/base/io-funcs.h

src/base/kaldi-error.cc

src/base/kaldi-error.h

src/base/kaldi-math-test.cc

src/base/kaldi-math.cc

src/base/kaldi-math.h

src/base/kaldi-types.h

src/base/kaldi-utils.cc

src/base/kaldi-utils.h

src/decoder/decodable-am-diag-gmm.cc

src/decoder/decodable-am-diag-gmm.h

src/decoder/decodable-am-sgmm.cc

src/decoder/decodable-am-sgmm.h

src/decoder/kaldi-decoder-inl-left.h

src/decoder/kaldi-decoder-inl.h

src/decoder/kaldi-decoder-left.h

src/decoder/kaldi-decoder-test.cc

src/decoder/kaldi-decoder.h

src/decoder/simple-decoder.h

src/feat/feature-functions.cc