[PATCH:xserver] Use unique logfile names when starting server with -displayfd

[Adam Jackson]

On Fri, 2016-01-01 at 18:11 -0800, Alan Coopersmith wrote:
> Fixes https://bugs.freedesktop.org/show_bug.cgi?id=93212
> 
> Previously all X servers started with -displayfd would overwrite
> Xorg.0.log - now a temporary name of Xorg.pid-.log is used
> until after -displayfd finds an open display - then it is renamed
> to the traditional Xorg..log name.
> 
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>

remote: I: patch #69313 updated using rev edcb6426f20c3be5dd5f50b76a686754aef2f64e.
remote: I: 1 patch(es) updated to state Accepted.
To ssh://git.freedesktop.org/git/xorg/xserver
   fe8562f..edcb642  master -> master

- ajax