--lines option to echo_stdout.rb/echo_stdout.rb

for new tests wanting several lines

t/bin/echo_stderr.rb

@@ -1,3 +1,9 @@
 #!/usr/bin/ruby
 
-STDERR.puts ARGV.join(" ")
+if ARGV.size > 0 && ARGV[0] == "--lines"
+    for arg in ARGV[1..-1]
+        STDERR.puts arg
+    end
+else
+    STDERR.puts ARGV.join(" ")
+end

t/bin/echo_stdout.rb

@@ -1,3 +1,9 @@
 #!/usr/bin/ruby
 
-puts ARGV.join(" ")
+if ARGV.size > 0 && ARGV[0] == "--lines"
+    for arg in ARGV[1..-1]
+        puts arg
+    end
+else
+    puts ARGV.join(" ")
+end