Update to Unicode 6.0.0 beta.

Update to Unicode 6.0.0 beta.
* lisp/international/charprop.el: Update copyright.
* lisp/international/mule-cmds.el (ucs-names): Update character ranges.
* lisp/international/uni-bidi.el:
* lisp/international/uni-category.el:
* lisp/international/uni-combining.el:
* lisp/international/uni-comment.el:
* lisp/international/uni-decimal.el:
* lisp/international/uni-decomposition.el:
* lisp/international/uni-digit.el:
* lisp/international/uni-lowercase.el:
* lisp/international/uni-mirrored.el:
* lisp/international/uni-name.el:
* lisp/international/uni-numeric.el:
* lisp/international/uni-old-name.el:
* lisp/international/uni-titlecase.el:
* lisp/international/uni-uppercase.el: Regenerate.
* admin/unidata/UnicodeData.txt: Update from
  http://www.unicode.org/Public/6.0.0/ucd/UnicodeData-6.0.0d5.txt