Changes to generate-proxy-keywords.cc so that it can print 'kwid weight...

Changes to generate-proxy-keywords.cc so that it can print 'kwid weight proxies' to each line, in addition to print out the FST.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@3451 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8