Support for key / is missing in pt_BR keymap, cannot customize keymap, <E-59> instead

Hi,
The pt_BR keymap lacks support for `/ ? °` key, which is located just left from the `RShift` and rigth from the `:` in the Portuguese Brazilian keyboard (ABNT2).

I tried to customize the keymap but there are no room for this extra key, as all the lines are already in use.

When the key is pressed, log file shows ``.

How to reproduce this bug:

Using Portuguese Brazilian keyboard (ABNT2), load logkeys in a terminal window like this:
`sudo logkeys -s -m ~/pt_BR.map -d /dev/input/event9 -o ~/logkeystest.txt`

Press once each key from `LShift` to `RShift`

kill logkeys with `sudo logkeys -k` (I prepared another terminal window with the command, so I just clicked on it and pressed `enter` to kill logkeys to simplify the log)

Log file attached

OS: Xubuntu 14.04 using an external USB keyboard with Brazilian Portuguese ABNT2 layout

[logkeystest.txt](https://github.com/kernc/logkeys/files/332695/logkeystest.txt)

Start with the pt_BR.map keymap and reproduce the issue using the provided logkeys command on an ABNT2 keyboard. Trace how the `/ ? °` key becomes `` and how keymap entries are parsed; done means the key is recognized and can be customized without breaking the existing mappings.

Written by the indexing model from the issue text.