flush any output before we run.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@278150 13f79535-47bb-0310-9956-ffa450edef68

src/script/runant.py

@@ -95,6 +95,7 @@ cmdline = ('%s %s -classpath %s -Dant.home=%s %s ' + \
 
 if debug:
     print '\n%s\n\n' % (cmdline)
+sys.stdout.flush()
 
 # Run the biniou!
 os.system(cmdline)