accept keypresses in the keyboard mapping dialog

git-svn-id: https://svn.code.sf.net/p/vice-emu/code/trunk@46018 379a1393-f5fb-40a0-bcee-ef074d9b53f7

disable the mapping types that don't make sense for a given input

git-svn-id: https://svn.code.sf.net/p/vice-emu/code/trunk@46017 379a1393-f5fb-40a0-bcee-ef074d9b53f7

poll the joystick input even in pause mode, this allows to 'unpause' …

improve POT glitch emulation. Only glitch when an existing port that …

scan all devices in /dev/input and filter joysticks by querying the e…

allow to 'unmap' again, clear POT mapping for the options that have n…

better pot value fix, scale values to 0-255 in the joy_set_axis_value…

add TODO

git-svn-id: https://svn.code.sf.net/p/vice-emu/code/trunk@46009 379a1393-f5fb-40a0-bcee-ef074d9b53f7

WFM fix to scale values appropriately for POT inputs which are expect…

use common API function to clear mapping, apply default mapping when …