Update all tools (*.sh/*.py) in Rudix Library/ directory.

Goodbye installer.sh, enters installer.py.
Goodbye poof.py, enters remover.py.
Using optparse module whenever is possible.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
Merge pull request #45 from ruda/update_library_tools

Update all tools (*.sh/*.py) in Rudix Library/ directory.
Update ELinks to version 0.13-20140427

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>