Ruby: Fix the example configurations option parsing

This patch fixes the, currently broken, Ruby example scripts to
reflect the changes in the parsing of command-line options.

configs/example/ruby_direct_test.py

@@ -36,6 +36,7 @@ import os, optparse, sys
 addToPath('../common')
 addToPath('../ruby')
 
+import Options
 import Ruby
 
 # Get paths we might need.  It's expected this file is in m5/configs/example.
@@ -44,6 +45,7 @@ config_root = os.path.dirname(config_path)
 m5_root = os.path.dirname(config_root)
 
 parser = optparse.OptionParser()
+Options.addCommonOptions(parser)
 
 parser.add_option("-l", "--requests", metavar="N", default=100,
                   help="Stop after N requests")