can not gtags-goto-tag on Emacs 23.3.1

[Yukio Goto]

Hi, I am byplayer.

I use Emacs 23.3.1.
I can not open file using gtags-goto-tag, when file are subdirectory.
I think (if rootdir (cd rootdir)) not affect on my emacs.

I patch gtags-select-it as follows. It can work.

      (setq file (gtags-decode-pathname (gtags-match-string 2)))
>      (let (rootdir)
>          (if gtags-rootdir
>            (setq rootdir gtags-rootdir)
>           (setq rootdir (gtags-get-rootpath)))
>          (if rootdir (setq file (concat rootdir file))))

I hope to fix this bug next release.

regards.