Running "./scripts/test.sh jetpack.XPIBuildTest" results in four test failures b/c they're not exporting keypair files to the temporary SDK directories they're creating.
This patch makes the tests work on my system, though I'm not sure if they're the best way to do things. Piotr, feel free to use this patch or not, I'm just trying to familiarize myself with the code by hacking on it. :P
Yes this will be fine - please push the changes