Cameras no longer need text kernels furnished. All of the appropriate changes...

Cameras no longer need text kernels furnished. All of the appropriate changes are here. See Spice.h for more info.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@2512 41f8697f-d340-4b68-9986-7bafba869bb8