realpath has to be applied to both local_lib and filename

Hi,
when using local-lib with a directory name which contains ".." uninstall doesn't work.
Here is an example:


```
$ cpanm -l /tmp/foo/../bar/ URI::Find
...
$ pm-uninstall -l /tmp/foo/../bar/ -v URI::Find
--> Working on URI::Find
URI::Find is included in the distribution URI-Find and contains:


Are you sure you want to uninstall URI-Find? [y] 
```
As a result, the .packlist is removed, but not the URI/Find.pm file and others.