HashyLexicon and related without feature template stuff
renamed HashyLexicon to PhraseLexicon, renamed PhraseLexicon to ChainPhraseLexicon, updated references
edited a comment
removed commented-out code
added some comments and cleaned up some extraneous stuff
added some lexicons containing Mandarin names
fixed merge conflict
Merge pull request #177 from k8si/hashy-lex

HashyLexicon and related (without feature template stuff)