[cjk] revised pinyin hyphenation support

[Werner LEMBERG]

Folks,


after a long hiatus some news.  From the ChangeLog file:

  Rewrite pinyin hyphenation support.

  Investigation has shown that the apostrophe before a syllable
  starting with `a', `e', or `o' should vanish if a line break occurs.
  This commit fixes this bug: The apostrophe should now be entered
  with the Babel shorthand "'; character ' itself is no longer part of
  the hyphenation patterns.

  It also adds support for pinyin syllables with tone markers, to be
  used with Unicode engines like XeTeX or luatex.

  Finally, the license for the resulting pattern files have been
  changed from GPL to MIT to allow broader usage.

It is expected that the new patterns will be part of the `hyph-utf8'
package within the next few weeks, which will then be directly
included into TeXLive.  As soon as this process will have been
completed I will also create a babel package for pinyin hyphenation.


    Werner