SYNOPSIS
int find_last_element( mixed m, closure c, int i, mixed extra)
FILE
/kernel/simul_efun/array.h
DESCRIPTION
Try to find a specific element within a mapping by applying
the given closure to each element. Start at position <i>
Returns -1 if no element is found.
In difference to find_element this function start from
the last element (or the i-th) and searches to the array beginning