replay: Improve error messages about configuration conflicts

replay: Improve error messages about configuration conflicts

Improve

   Record/replay feature is not supported for '-rtc base=localtime'
   Record/replay feature is not supported for 'smp'
   Record/replay feature is not supported for '-snapshot'

to

   Record/replay is not supported with -rtc base=localtime
   Record/replay is not supported with multiple CPUs
   Record/replay is not supported with -snapshot

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>