shell: use transient flags for activate or not new surfaces

Inactive surfaces doesn't set keyboard focus, so it can be used for tooltips,
toolbars and some other type of windows.

This requires protocol side changes.

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>

src/shell.c

@@ -2133,8 +2133,11 @@ map(struct desktop_shell *shell, struct weston_surface *surface,
 	}
 
 	switch (surface_type) {
-	case SHELL_SURFACE_TOPLEVEL:
 	case SHELL_SURFACE_TRANSIENT:
+		if (shsurf->transient.flags ==
+				WL_SHELL_SURFACE_TRANSIENT_INACTIVE)
+			break;
+	case SHELL_SURFACE_TOPLEVEL:
 	case SHELL_SURFACE_FULLSCREEN:
 	case SHELL_SURFACE_MAXIMIZED:
 		if (!shell->locked)