Made -X/-Xhelp spec more lenient on windows

Author: nicksieger

spec/launcher_spec.rb

@@ -12,10 +12,10 @@
   it "should print help message" do
     args = jruby_launcher_args("-Xhelp 2>&1")
     args.detect{|l| l =~ /JRuby Launcher usage/}.should be_true
-    args[-1].should == "-X"
+    args.should include("-X")
     args = jruby_launcher_args("-X 2>&1")
     args.detect{|l| l =~ /JRuby Launcher usage/}.should be_true
-    args[-1].should == "-X"
+    args.should include("-X")
   end
 
   it "should use $JAVACMD when JAVACMD is specified" do