Simplify release name handling, code improvements and fixes

usr/local/share/bastille/destroy.sh

@@ -134,8 +134,29 @@ fi
 NAME="$1"
 
 ## check what should we clean
-if echo "${NAME}" | grep -qwE '^([0-9]{1,2})\.[0-9]-RELEASE$'; then
+case "${NAME}" in
+*-RELEASE|*-release|*-RC1|*-rc1|*-RC2|*-rc2)
+## check for FreeBSD releases name
+NAME_VERIFY=$(echo "${NAME}" | grep -iwE '^([1-9]{2,2})\.[0-9](-RELEASE|-RC[1-2])$' | tr '[:lower:]' '[:upper:]')
+if [ -n "${NAME_VERIFY}" ]; then
+    NAME="${NAME_VERIFY}"
     destroy_rel
 else
-    destroy_jail
+    usage
 fi
+    ;;
+*-stable-LAST|*-STABLE-last|*-stable-last|*-STABLE-LAST)
+## check for HardenedBSD releases name
+NAME_VERIFY=$(echo "${NAME}" | grep -iwE '^([1-9]{2,2})(-stable-LAST|-STABLE-last|-stable-last|-STABLE-LAST)$' | sed 's/STABLE/stable/g' | sed 's/last/LAST/g')
+if [ -n "${NAME_VERIFY}" ]; then
+    NAME="${NAME_VERIFY}"
+    destroy_rel
+else
+    usage
+fi
+    ;;
+*)
+    ## just destroy a jail
+    destroy_jail
+    ;;
+esac