Sar model patches found in ossim_plugins/ossim location from Emmanuel

[gpotts]

And finally the Sar models. I included the full ossim_plugins/ossim directory as there is significant change. The modifications in ossim trunk between revision 17643 and now are not covered.

Quick summary: - Add support for the optical sensor Formosat. I'm not very happy with the way it was done: the code has a lot in common with Spot and should be shared, but that would require to change the organization of the Spot metadata in ossim. - Additional metadata for Radarsat2 and TerrasarX (radiometric calibration) - virtual destructor in Palsar - Optimization of the Hermite interpolator for the orbits (was 95% of the time for orthorectification of SAR, speedup 10x). There is still some room for improvement (make hermite a member of platform position to avoid some computation that is common between all points for example). - Several additional classes to help with coordinates, calibration, etc.

Let me know if you have any trouble with all this.

[gpotts]

PAtches applied but have no way of testing. Will rely on the person implementing the library to verify.