return error code upon KeyboardInterrupt

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30381 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/distrib/all/taskrunner.py

@@ -182,6 +182,7 @@ class TaskRunner(object):
         except KeyboardInterrupt:
             print "STOPPING JOBS..."
             self.stopAllJobs()
+            return 1
 
         except:
             print "Unknown exception..."