[3.3.x] SDL client: unable to perform some commands

[PowerWyrm]

The following commands don't work with the SDL client:
- check knowledge
- inscribe
- display monster list

These commands are the ones mapped to the SDLK_0-9 keys. On my keyboard (AZERTY), the "number" keys (0-9) are mapped to shift+SDLK_0-9, not SDLK_0-9. In sdl_keypress(), the code sends "number" keys when "shift" is not pressed. I guess this only works on QWERTY keyboards.

[Magnate]

Oh dear - this is a known issue (#1460), but I don't think we realised it was this pervasive ...

[PowerWyrm]

This is even worse... The Win client is affected too!
Pressing { for inscription and then a ctrl-alt key results in: "2~", "3#", "0@"...