Example:
out/Debug/vie_auto_test --auto_custom_call --override "Enter destination IP.=127.0.10.55,Enter video send port.=12345"
The above will launch a call directly and choose all default values except for the overridden ones specified above.
BUG=
Review URL: https://webrtc-codereview.appspot.com/920008
git-svn-id: http://webrtc.googlecode.com/svn/trunk@3064 4adac7df-926f-26a2-2b94-8c16560cd09d