Log Message:
Update to 2.9
changes mainly for pthai.el
- add spell checking capability, similar to ispell, for word, line,
  buffer, region and related functions
- many small clean ups, fix def display when downloading, double
  writing of files, always fetching some words, others fixes
- add grep-like function to search dictionary files
- add complete-word function for inserting words
- remove interactive args with \nP
- count nor-nayn as valid single char
- use completing-read instead of ido in a few places