Add -l option to warn() and think()

include/core.sh

     #
     # If verose is on, think loud.
     #
-    $FFOOD_VERBOSE && echo "$@"
+    # Use "-l" to split every parameter to separate line, (useful
+    # or longer warnings)
+    #
+    $FFOOD_VERBOSE || return 0
+    case "$1" in
+        -l) shift; local l; for l in "$@"; do echo "$l" >&2; done   ;;
+        *)  echo "$@" >&2;                                          ;;
+    esac
 }
 
 warn() {
     #
     # Warn them
     #
+    # Use "-l" to split every parameter to separate line, (useful
+    # or longer warnings)
+    #
     # Resist  temptation to prefix "warning" or similar BS here.
     # STDERR is *made* for warnings.
     #
-    echo "$*" >&2
+    case "$1" in
+        -l) shift; local l; for l in "$@"; do echo "$l" >&2; done   ;;
+        *)  echo "$@" >&2;                                          ;;
+    esac
 }
 
 append_if_missing() {