FUNCTION: array_concat_wrapper PURPOSE: Wrapper for the array_concat function -- correctly handles the case when the input array is an empty string Inputs: arg: The argument to be concatenated array: The array to which it should be concatenated, or nothing Output: array + arg $LastChangedBy: egrimes $ $LastChangedDate: 2013-10-22 12:49:25 -0700 (Tue, 22 Oct 2013) $ $LastChangedRevision: 13372 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/general/misc/array_concat_wrapper.pro $