function: in_set purpose: simple boolean function to check whether an element is a member of a set(array). It is mainly syntactic sugar for a frequently repeated operation. inputs: ele: The element to be searched for set: The set to be searched output: 1=yes, 0=no $LastChangedBy: pcruce $ $LastChangedDate: 2008-11-10 12:47:28 -0800 (Mon, 10 Nov 2008) $ $LastChangedRevision: 3952 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/general/misc/SSW/in_set.pro $