PR# 11020 Ctrl+Pause doesn't cancel compilation on my Sun Unix keyboard

On my Sun Unix keyboard (both at home and at work), Ctrl+Pause does not cancel
compilation.  Can you tell me what magic to use to make it work?  I hate to
use xmodmap since then different users may have things setup differently.

Perhaps you could add a button to the Project toolbar (or maybe just make it
available in toolbar customization window) that would cancel a compilation.
I would actually prefer a button to a key press anyway.

A button to clean compilation (equivalent to ec -clean flag) would also be
nice, with appropriate user confirmation required of course.