bug#1474: 23.0.60; desktop.el don't check if pid in his lock file is always in use

[Ulrich Mueller]

>>>>> On Wed, 3 Dec 2008, Juanma Barranquero wrote:

> Please explain: if the desktop file that Emacs finds out is locked
> by a process running in another computer, what do you want the local
> Emacs to do?

So in addition to the process id, the lock file should also contain
the host name, so that the most common usage case can be handled.

And instead of a lock file with new syntax, couldn't desktop.el use a
symlink, identical to what is done for file locking? (Or even use
functions "lock-buffer" etc.?)

Ulrich