🐛 Made ARGV capture functional

Because of Thor use in the bootloader, the existing ARGV contents were cleared out when any reference occurred. Now the ARGV is cloned at object instantiation.

lib/ceedling/system_wrapper.rb

@@ -26,6 +26,10 @@ def self.time_stopwatch_s
  return Process.clock_gettime( Process::CLOCK_MONOTONIC, :float_second )
  end
 
+ def initialize()
+ @argv = ARGV.clone.freeze
+ end
+
  # class method so as to be mockable for tests
  def windows?
  return SystemWrapper.windows?
@@ -43,8 +47,8 @@ def search_paths
  return ENV['PATH'].split(File::PATH_SEPARATOR)
  end
 
- def cmdline_args
- return ARGV
+ def get_cmdline
+ return @argv
  end
 
  def env_set(name, value)