Added short form -u for option --utf

tools/exitsnoop.py

@@ -24,7 +24,7 @@
  exitsnoop # trace all process termination
  exitsnoop -x # trace only fails, exclude exit(0)
  exitsnoop -t # include timestamps (local time)
- exitsnoop --utc # include timestamps (UTC)
+ exitsnoop -u  # include timestamps (UTC)
  exitsnoop -p 181 # only trace PID 181
  exitsnoop --label=exit # label each output line with 'exit'
 """
@@ -58,7 +58,7 @@ def _getParser():
  epilog=_examples)
  a=parser.add_argument
  a("-t", "--timestamp", action="store_true", help="include timestamp (local time default)")
- a("--utc",  action="store_true", help="include timestamp in UTC (-t implied)")
+ a("-u", "--utc", action="store_true", help="include timestamp in UTC (-t implied)")
  a("-p", "--pid", help="trace this PID only")
  a("--label", help="label each line")
  a("-x", "--failed", action="store_true", help="trace only fails, exclude exit(0)")