(Maint) Add watchr autotest script

This patch adds a watchr script to autotest the stdlib module.  To use:

    % watchr spec/watchr.rb

spec/watchr.rb

@@ -0,0 +1,86 @@
+ENV['FOG_MOCK'] ||= 'true'
+ENV['AUTOTEST'] = 'true'
+ENV['WATCHR']   = '1'
+
+system 'clear'
+
+def growl(message)
+  growlnotify = `which growlnotify`.chomp
+  title = "Watchr Test Results"
+  image = case message
+  when /(\d+)\s+?(failure|error)/i
+    ($1.to_i == 0) ? "~/.watchr_images/passed.png" : "~/.watchr_images/failed.png"
+  else
+    '~/.watchr_images/unknown.png'
+  end
+  options = "-w -n Watchr --image '#{File.expand_path(image)}' -m '#{message}' '#{title}'"
+  system %(#{growlnotify} #{options} &)
+end
+
+def run(cmd)
+  puts(cmd)
+  `#{cmd}`
+end
+
+def run_spec_test(file)
+  if File.exist? file
+    result = run "rspec --format p --color #{file}"
+    growl result.split("\n").last
+    puts result
+  else
+    puts "FIXME: No test #{file} [#{Time.now}]"
+  end
+end
+
+def filter_rspec(data)
+  data.split("\n").find_all do |l|
+    l =~ /^(\d+)\s+exampl\w+.*?(\d+).*?failur\w+.*?(\d+).*?pending/
+  end.join("\n")
+end
+
+def run_all_tests
+  system('clear')
+  files = Dir.glob("spec/**/*_spec.rb").join(" ")
+  result = run "rspec #{files}"
+  growl_results = filter_rspec result
+  growl growl_results
+  puts result
+  puts "GROWL: #{growl_results}"
+end
+
+# Ctrl-\
+Signal.trap 'QUIT' do
+  puts " --- Running all tests ---\n\n"
+  run_all_tests
+end
+
+@interrupted = false
+
+# Ctrl-C
+Signal.trap 'INT' do
+  if @interrupted then
+    @wants_to_quit = true
+    abort("\n")
+  else
+    puts "Interrupt a second time to quit"
+    @interrupted = true
+    Kernel.sleep 1.5
+    # raise Interrupt, nil # let the run loop catch it
+    run_suite
+  end
+end
+
+def file2spec(file)
+  result = file.sub('lib/puppet/', 'spec/unit/puppet/').gsub(/\.rb$/, '_spec.rb')
+  result = file.sub('lib/facter/', 'spec/unit/facter/').gsub(/\.rb$/, '_spec.rb')
+end
+
+
+watch( 'spec/.*_spec\.rb' ) do |md|
+  #run_spec_test(md[0])
+  run_all_tests
+end
+watch( 'lib/.*\.rb' ) do |md|
+  # run_spec_test(file2spec(md[0]))
+  run_all_tests
+end