[bug #17623] add option to grep -R to NOT follow symlinks to directory

[Richard Neill]

Follow-up Comment #5, bug #17623 (project grep):

Any chance of an update? This would be really amazingly helpful.

For example, when trying to find a string which we know is in
/etc/<somewhere>, it's sensible to grep through a few MB of stuff in /etc.
Except that apache is often configured with symlinks from /etc/ to /lib  

Similarly, when searching in /home, one might come across .wine/dosdevices/* 
which symlink back to /

And the grep then ends up taking an hour.

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