PURPOSE: Apply eclipse corrections (when present) to 3D data structures. ARGUMENTS: data: Valid 3D data structure KEYWORDS: eclipse: Flag used by this routine to determine when an ecplise starts or ends (assists output messages). Will be set to 1 at the start of an eclipse and 0 at the end. NOTES: $LastChangedBy: aaflores $ $LastChangedDate: 2013-09-10 12:11:07 -0700 (Tue, 10 Sep 2013) $ $LastChangedRevision: 13011 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/themis/spacecraft/particles/thm_part_apply_eclipse.pro $