Update from Unicode 6.2.0 to 6.3.0

Update from Unicode 6.2.0 to 6.3.0

Note: I used Emacs 24.3 to generate the uni-*.el files, owing to
unexplained (possibly harmless) differences that the current trunk's
use of lexical-binding for subr.el causes.  Ref:
http://debbugs.gnu.org/15825#29

* admin/unidata/BidiMirroring.txt, admin/unidata/UnicodeData.txt:
Update to 6.3.0.

* lisp/international/uni-bidi.el, lisp/international/uni-category.el:
* lisp/international/uni-name.el, lisp/international/uni-numeric.el:
Regenerate.