[Patches] Add option to set stdout to line buffering

[Erik Schnetter]

After a suggestion by Jonathan Thornburg, this patch adds a new  
command line option to select the buffering mode of stdout.  The  
option is "-b <mode>", or "-buffering=<mode>", where mode can be  
"no", "line", or "full".  This option uses the ANSI C function call  
setvbuf() to select the corresponding buffering mode.

The buffering mode can be selected only once in a portable programme,  
and it has to be selected before the first output occurs.  This means  
that it has to be implemented in the flesh.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>

My email is as private as my paper mail.  I therefore support encrypting
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