Add several FRISBEE ifdefs to the user level unzip code. Rather than
duplicate this code in the frisbee tree, build a version suitable for linking in with frisbee. I also modified the FrisbeeRead interface to pass back pointers instead of copying the data. There is no real performance benefit that I noticed, but it made me feel better not to copy 350 MBs of data another time. There is new initialization function that is called by the frisbee main program to set up a few things.