Alexis S. L. Carvalho <alexis@cecm.usp.br> [Wed, 11 Jul 2007 17:40:41 -0300] rev 4859
Add symlink method to util.opener.
Differences from os.symlink:
- the symlink name is relative to the opener base directory
- if a file with that name already exists, it's removed
- if necessary, parent directories are created
- if the system (OS or filesystem) doesn't support symlinks, a
regular file is created. Its contents are the symlink target.