#229 -I options doesn't handle symbolic link

[Runhui Xie]

When using "-I dirname" to include header directory, if dirname is a symbolic link, cscope won't find the files there. eg.

test.c:
<code>
include "inc.h"
</code>

where inc.h is in /dir and /dirname is a symlink to /dir, then "cscope -I /dirname" won't read /dir

My system:
Linux tselap 2.6.24-19-generic #1 SMP Wed Jun 4 15:10:52 UTC 2008 x86_64 GNU/Linux

[Hans-Bernhard Broeker]

A good while ago, we decided to err on the side of caution regarding the problem of infinitely recursive symlinks --- so we reject symlinks outright.