[sugar] Measure Activity - proposal for inclusion in OLPC build

[Albert Cahalan]

Arjun Sarwal writes:

> I would like to propose Measure Activity to be included in the build.

I really think this activity is important. I'm not so sure it
is ready to ship.

> (3)  Provides instant feedback (eg. make sound and see waveform)

Out of the box, all I get is a crooked line that jumps up and down
in response to noise.

If I move the unlabled mystery slider all the way to the left,
then I can make out some repetition. That setting should be default.

The waveform still isn't at all stable. It really needs to lock
on somehow ("trigger" I believe) to make the display better.

Also, it looks like some of the data is still getting dropped,
and start-up time is rather lengthy.