gtags doesn't deal with link file properly.

[updog Liu]

OS: Ubuntu 11.04
GLOBAL: 5.9.6
Command line: gtags -v

Due to a symbolic link in some place of the source tree to the root directory,
many file are processed multiple times.
For example:
These is a link file at ~/nestk/samples/example_embedded to ~/nestk.

 [1402] extracting tags of
nestk/samples/example_embedded/nestk/deps/eigen/Eigen/src/LU/Inverse.h
 [2718] extracting tags of
nestk/samples/example_embedded/nestk/samples/example_embedded/nestk/deps/eigen/Eigen/src/LU/Inverse.h
 [4034] extracting tags of
nestk/samples/example_embedded/nestk/samples/example_embedded/nestk/samples/example_embedded/nestk/deps/eigen/Eigen/src/LU/Inverse.h


-- 
Regards,
Zihan, Sheldon Liu
------------------------
The Media Computing Group (MCG)
where Media Spectrum unleashes Digital Potential for Fun in Life.

School of Creative Media (SCM)
City University of Hong Kong