Add build target for Festival lexicon conversion script.
Add build target for Festival lexicon conversion script.

googlei18n/language-resources,googlei18n/language-resources,google/language-resources,google/language-resources,googlei18n/language-resources,googlei18n/language-resources,googlei18n/language-resources,google/language-resources,googlei18n/language-resources,google/language-resources,google/language-resources,google/language-resources