TEST_BUG: com/sun/jdi/BreakpointWithFullGC.sh fails to cleanup in Cygwin

[Alan Bateman]

Chris Hegarty wrote:
> Hi Dan, Alan,
>
> This is a trivial change to use /dev/null instead of NUL for Windows 
> test with Cygwin.
>
> http://cr.openjdk.java.net/~chegar/7076756/webrev.00/webrev/
>
> Thanks,
> -Chris.
Looks okay although it might be slightly cleaner to set devnull 
consistently, ie:

case Windows* )
  devnull=NUL
  ;;

Just a suggestion.

-Alan.