Note update of GNU GLOBAL 5.9.3.

Big changes:

- Allows the symbolic links which point to directories, and treats
  the names of struct, union, enum and enum member as definitions.
  (5.7)

- Uses GPLv3 and LGPLv3 license. (5.6)

- Becomes GNU BOKINware. (5.5)

Details:

http://cvs.savannah.gnu.org/viewvc/global/global/NEWS?view=markup

Bunch of incompatible format changes.  DON'T FORGET TO RE-GENERATE TAGS!

(uebayasi)