Process irrelevant switches in friendly manner

[GoogleCodeExporter]

imported from: http://argus-bg.dnsalias.org/issues/535

What steps will reproduce the problem?

1. playback usage tells about irrelevant switches, such as --time, --range, 
--burst, --msg-size

What is the expected output? What do you see instead?

The purpose of this feature is to have simplified usage for each sub command of 
vperf without irrelevant switches.
Please check carefully all switches of all sub commands and make sure they are 
correct.
In this occasion, please verify that whenever user provide incorrect switch, 
vperf stops with appropriate message and not continue silently.

Original issue reported on code.google.com by igor.ivanov@itseez.com on 4 Apr 2011 at 7:39

[GoogleCodeExporter]

Original comment by igor.ivanov@itseez.com on 13 Apr 2011 at 12:53

• Changed state: Started

[GoogleCodeExporter]

r49

Original comment by igor.ivanov@itseez.com on 15 Apr 2011 at 2:45

• Changed state: Fixed