Replace LISTadd macro with LISTadd_last

No clue why the macro was used:
 #define LISTadd(list, item) LISTadd_last(list, item)

substitution via
    for i in `grep -lr LISTadd[^_]`; do sed -i -e 's/LISTadd\([^_]\)/LISTadd_last\1/;' $i; done