File set_php_7.4.latest.sh of Package dba-apa24-php-7424-zip

#!/bin/bash
#set -x
v=`ls -1d 7.4.? 7.4.?? 2>/dev/null|cut -d "." -f3 |sort -n |tail -1`
i=`ls -l 7.4.latest.bak* 2>/dev/null|wc -l`
test -L 7.4.latest && mv 7.4.latest 7.4.latest.bak.${i}
rc=`ln -fs 7.4.${v} 7.4.latest`
exit $rc