PIL FITs image decoder

[jbrewer]

>http://www.stsci.edu/resources/software_hardware/pyfits

I know and love PyFits, but I need to be able to do draw shapes on a
FITs image (and perhaps some other operations), and I don't believe
that PyFits allows these kinds of operations.  It might be possible to
import the data into a numarray object and turn that into something PIL
can read, though.

Jeremy