Move OS-specific VT key handler code from common to os-support

Adds new function xf86Activate to the OS-specific *VTsw*.c files
and calls it from xf86ProcessActionEvent

Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>
Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (GNU/Linux)

hw/xfree86/os-support/shared/VTsw_noop.c

@@ -52,3 +52,9 @@ xf86VTSwitchTo(void)
 {
 	return(TRUE);
 }
+
+Bool
+xf86VTActivate(int vtno)
+{
+	return(TRUE);
+}

hw/xfree86/os-support/shared/VTsw_usl.c

@@ -88,3 +88,14 @@ xf86VTSwitchTo(void)
 		return(TRUE);
 	}
 }
+
+Bool
+xf86VTActivate(int vtno)
+{
+#ifdef VT_ACTIVATE
+	if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, vtno) < 0) {
+		return(FALSE);
+	}
+#endif
+	return(TRUE);
+}