Log Message:
Update to 6.2.6:

Version 6.2.6 - December 11 2012

[CHANGES]
New facilities:
ctags-5.8.patch: Patch against ctags-5.8. This adds new option --gtags and new
  function makeSimpleReferenceTag() to ctags. These are for making reference tags
  for GLOBAL, and enable you to write a single parser for both GLOBAL and ctags
  at once.
exuberant-ctags.so: Added support for ctags --gtags option.

Changed:
gtags.vim: Renamed custom variable 'Dont_Jump_Automatically' to 'Gtags_No_Auto_Jump'.
  Now 'Dont_Jump_Automatically' is deprecated.
global: The performance of literal search (-g --literal) has been improved.
  A pattern string which consists of alphanumeric characters and/or blank characters
  is treated as a literal string automatically. Try 'global -gx --literal string'.