[PATCH] Add ssh_config equivalents of -N, -n and -f

[Volker Diels-Grabsch]

Dear OpenSSH developers,

I kindly ask you to review the attached set of patches which
introduce ssh_config equivalents of the flags -N, -n and -f in
a straight forward way:

* NoShell for -N

* StdinNull for -n

* ForkAfterAuthentication for -f

The ssh_config names were derived directly from the internal flag
names, e.g. no_shell_flag was moved to option.no_shell and hence
the ssh_config name became NoShell.  The man pages ssh(1) and
ssh_config(5) are adjusted accordingly.

As a final remark, I noticed that the variable ono_shell_flag (not to
be confused with no_shell_flag) is only assigned once and never used.
So I assume this is dead code and I'm proposing a patch to remove it.


Regards,
Volker

-- 
Volker Diels-Grabsch
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