Minor update to fileutil.findFile to more gracefully handle the case when the directory can not be accessed.
Minor update to fileutil.findFile to more gracefully handle the case when the directory can not be accessed.




git-svn-id: 6d9763a5a770351123389058c013888add577529@18895 fe389314-cf27-0410-b35b-8c050e845b92

spacetelescope/stsci.tools