Hello,

Currently the emacsclientw (the non-console version of Win32 emacs client)
pops up a modal message box if emacs server is not running even if there is
an alternate specified. This makes the -a option (with or without an
argument) somewhat useless, since the user is greeted by a modal message
box, interrupting the workflow.
The attached patch supresses the modal message box (only in Win32 and only
in the non-console client) if there is an alternate editor specified - the
user will only get an error message if the alternative fails too.

The patch is produced against today's emacs master.

Sincerely yours,
     Evgeny