Update ossim plugins and gui for 1.8.20
Update ossim plugins and gui for 1.8.20

astroidex/OSGeoLive,kalxas/OSGeoLive,guygriffiths/OSGeoLive,OSGeo/OSGeoLive,guygriffiths/OSGeoLive,PascalLike/OSGeoLive,astroidex/OSGeoLive,astroidex/OSGeoLive,OSGeo/OSGeoLive,kalxas/OSGeoLive,guygriffiths/OSGeoLive,OSGeo/OSGeoLive,kalxas/OSGeoLive,guygriffiths/OSGeoLive,OSGeo/OSGeoLive,astroidex/OSGeoLive,kalxas/OSGeoLive,PascalLike/OSGeoLive,astroidex/OSGeoLive,PascalLike/OSGeoLive,astroidex/OSGeoLive,PascalLike/OSGeoLive,OSGeo/OSGeoLive,PascalLike/OSGeoLive,guygriffiths/OSGeoLive,kalxas/OSGeoLive,guygriffiths/OSGeoLive,kalxas/OSGeoLive,kalxas/OSGeoLive,PascalLike/OSGeoLive,OSGeo/OSGeoLive,guygriffiths/OSGeoLive,OSGeo/OSGeoLive,PascalLike/OSGeoLive