Missing proper support for configurable keymaps

[mntmn]

Quoting an email I got today:

When sledge is run via the example "./sledge < tests/boot2.l", the keyboard alignment appears to be off for the US layout. The exact discontinuity is that the parentheses keys appear to be misaligned in that ')' yields '=' and '(' yields ')', is this documented somewhere or easily configurable?

[mntmn]

I guess I will change the /keyboard fs so that it will have to
return standardized scancodes and qualifiers that are then convertable
to to input strings via a keymap function.