Log Message:
Update to 2.26
all changes for pthai.el
- add seconds to pthai-say-time, simplify time parsing
- rename 'pthai-parse-hour-minute-second to 'pthai-parse-hms
- rename 'pthai-bounds-offset-of-split-string to 'pthai-bounds-offsets
- rename 'pthai-randomize to 'pthai-nrandomize, use faster in-place algorithm
- remove 'pthai-nth-set, pthai-nth-delete
- many changes related to 'thai-word-table including:
  * rename 'pthai-thai-break-words to 'pthai-twt-split
  * remove 'pthai-twt-update, change interface for 'pthai-twt-read
  * add 'pthai-twt-add/remove/clear for manipulating the 'thai-word-table
  * modification to 'pthai-dictionary will also be applied to 'thai-word-table
  * simplify pthai-dictionary-read-*, only have clear option for
    'pthai-dictionary-read-files
  * add custom variables pthai-twt-splitter-enable, pthai-twt-lock