Fix build using gcc-4.6 (Closes: #624917). - Add patches/fix_ftbfs_with_gcc-4.6.patch. Fix build without v4l1 (Closes: #623418). - Add patches/support_v4lv2_only.patch. Fix optimize of i386 (Closes: #629414). - Opencv was optimized to i686. This chenged optimization to i486. - Add patch/optimize_i486.patch.