Pristine copy of Fractal from Bamboo

I don't know where the original file came from and it wasn't attributed
so we are taking it as-is for now.

See #4.
Complete port of Fractal

It's mostly embarrassingly parallel except for the output portion.

Include the original Bamboo task specification for comparison. Some
numbers in the original specification must be off since they look too
small for any serious performance measurements.

See #4.
Pristine copy of Fractal from Bamboo

According to the paper, this is a port from the StreamIt benchmark
suite.

See #4.
Complete port of FilterBank

It's mostly embarrassingly parallel except for the output portion. There
is a "merge" operation but it is mostly order independent.

Include the original Bamboo task specification for comparison. There is a
lot of freedom to specify the sequential version so I did one that seems
the simplest.

See #4.