emit text label 'making base backup'

updater.py

@@ -187,6 +187,7 @@ class updateThread(QtCore.QThread):
                 print "downloaded update"
                 downloadfile.close()
                 if platform.system() == "Darwin" and ".app" in sys.argv[0]: # bundle
+                    self.labelText.emit("Making a backup of AO base folder...")
                     path = "/".join(sys.argv[0].split("/")[:-1]) # to Resources folder
                     os.system("cp -r "+path+"/base ./appbase")  # move the base folder out of the app folder to avoid deletion
                 returncode = 0