Log Message:
Update to 2.35
- add 'pthai-message for large messages
- use standard emacs regexp in pthai-split-region
- include playable/unplayable with pthai-soundfiles-counts
- small cleanups for pthai-time-loc2th
- rename pthai-reverse-lookup -> pthai-lookup-reverse, simplify
- include classifiers in dictionary word counts
- simplify classifier functions,
  rename pthai-lookup-classifier -> pthai-classifier-lookup,
  rename pthai-lookup-classifier-at-point -> pthai-classifier-lookup-at-point,
  add pthai-classifier-list pthai-classifier-count pthai-classifier-by
  pthai-classifier-for, remove pthai-lookup-classifier-detail,
  pthai-lookup-classifier-detail-at-point, and pthai-classifier-info
- display skipped words without definitions for pthai-practice-*, small cleanups