configure: undo using autobuilds to temporarily verify strict aliasing warnings.

            dnl Also, on gcc 4.0.X it is totally unbearable and complains all

            dnl over making it unusable for generic purposes. Let's not use it.

            tmp_CFLAGS="$tmp_CFLAGS"

            dnl When cross-compiling with gcc 3.0 or later,

            dnl enable strict aliasing rules and warnings.

            if test "x$cross_compiling" = "xyes"; then

              tmp_CFLAGS="$tmp_CFLAGS -fstrict-aliasing -Wstrict-aliasing=2"

            fi

          fi

          #

          dnl Only gcc 3.3 or later