OSG argparse fix.

ih/workflow.py

@@ -149,7 +149,10 @@ class Workflow(object):
                 elif str(arguments[arg]) in outputs:
                     arglist.append(outputs[str(arguments[arg])]["file"])
                 else:
-                    arglist.append(str(arguments[arg]))
+                    if "osg" in self.config:
+                        arglist.append("'" + str(arguments[arg]) + "'")
+                    else:
+                        arglist.append(str(arguments[arg]))
             self.jobs[dax][jobname].addArguments(*arglist)
             if dependencies:
                 for depend in dependencies: