[Rpm-maint] [rpm-software-management/rpm] Please add stdin support for `rpmspec -P` (Issue #1926)

[Demi Marie Obenour]

> > > I think `/dev/stdin` only works with a shell. It doesn't work if you execv(). At least I get `error: Unable to open /dev/stdin: No such device or address`
> > 
> > 
> > On what operating system? On Linux that might happen if stdin is a socket.
> 
> On Linux (Fedora), where `/dev/stdin` is a symlink to `/proc/self/fd/0`

Interesting.  I would need to see your program to know for sure, but my guess is that fd 0 is a socket at the time of `execve()`, which would cause this error.

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