04_tlus update

1)
affected variables - duck*, othbirds*, other*
issue - livestock codes (in section K) run 1-6 and 8-10, skipping over 7. using a loop to count up from 1 to 10 incorrectly codes the livestock related variables.
action - added in a "na" livestock in the "lvstk" macro and then delete it after the loop creating the livestock variables.