Ok, I'm running your patched kernel now.

sudo lsmod | grep tosh
toshiba_acpi           18687  0 
sparse_keymap          13890  1 toshiba_acpi

This is what I got from dmesg:
[   28.777868] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.20
[   28.777878] toshiba_acpi: HCI type 3 (SPFC)
[   28.778431] input: Toshiba input device as /devices/virtual/input/input5

This is what my keyboard looks like: http://209.167.114.38/support/techsupport/tsbs/all/-TSB001343.htm

No additional hotkeys were working...but I was playing with fwts earlier today. I was doing pretty well on the interactive test until it asked me to press the powerbutton which turned off my computer. When I restarted, none of the events were working...until I suspended the computer and rewoke the computer. So I tried suspending and resuming the patched kernel. Now Fn+F8 (wifi on/off) works, Fn+Esc (mute) works but the dedicated mute button doesn't work (why Toshiba thinks I need two ways to turn on/off sound and wifi is beyond me). The other Fn keys (except for numlock, cursorlock, and scrollock) still don't work. (Brightness keys for instance worked with fwts but doesn't work with the current Natty kernel or this patched one).

So I tried keymap again with input 5, which recognized the Fn keys (except for numlock, cursor, and scrolllock), except it says "no scan code received, key code: mute" for instance. sudo input-events 5 worked so I'm attaching the results I got from that.