Change g_ScreenInfo, an array of winScreenInfo elements, from a
static array of MAXSCREENS elements, to a dynamically allocated one
Fix up the validation that -screen option screen numbers are
contiguous from zero (which possibly didn't work correctly before
anyhow)
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Jamey Sharp<jamey@minilop.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
