[Kst] reading streaming data from stdin with kst2

[Václav Šmilauer]

Hello,

I was using the following with kst1:

    kst -x 1 -y 2 -y 3 -n 15 -m 1 stdin

Now with kst2, how can I read streaming data from stdin? I checked 
libkstapp/commandlineparser.cpp and it does not seem to handle stdin.

If I can write data to a regular file and flush it after each new line 
written, while kst2 would keep updating graphs from the new records, 
that would be also fine. I need response time of a few hundreds 
milliseconds maximum.

Cheers, Vaclav