Add crossarch option into palm-desktop-configure

* With this patch qt4 submissions/2 can build properly

Open-webOS-DCO-1.0-Signed-off-by: Weiwen Zhao <panda.hust@gmail.com>
Add crossarch option into palm-desktop-configure

* With this change qt4 can build properly using crossarch option

Open-webOS-DCO-1.0-Signed-off-by: Weiwen Zhao <panda.hust@gmail.com>