Add an option (deactivated by default) to resolve symlinks.

[Neki]

By setting $_FASD_RESOLVE_SYMLINKS to 1, fasd will resolve symbolic links before storing paths in the entry list. This is useful when one is used to access the same directory both with a symbolic link and with the real (absolute) path, but wants only one entry for this directory in the list.

This option is set to 0 by default in order not to break retro-compatibility.

I am not familiar with shell scripting so any feedback is appreciated.