Fix conversions from pointer to tcg_target_long

Fix conversions from pointer to tcg_target_long

tcg_gen_exit_tb takes a parameter of type tcg_target_long,
so the type casts of pointer to long should be replaced by
type casts of pointer to tcg_target_long.

These changes are needed for build environments where
sizeof(long) != sizeof(void *), especially for w64.

See 4b4a72e55660abf7efe85aca78762dcfea5519ad which fixed the
same issue for the other targets.

Cc: Alexander Graf <agraf@suse.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Guan Xuetao<gxt@mprc.pku.edu.cn>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>