Review request: 7129308 Handle OperatingSystemMXBean.getSystemLoadAverage() output on macosx

[Jason Uh]

Hi,

This change handles the difference in the output text of /usr/bin/uptime 
on Mac OS X from that on Unix/Linux.

Please see: http://cr.openjdk.java.net/~juh/7129308/webrev.00/

Note that

          output = output.substring(output.lastIndexOf(LOAD_AVERAGE_TEXT) +
-                                  LOAD_AVERAGE_TEXT.length());
+                                  LOAD_AVERAGE_TEXT.length() + 1);


serves to simply strip a space on all platforms.

Thanks,
Jason