Add UNLIKELY and LIKELY macros
* src/g10lib.h (LIKELY, UNLIKELY): New. (gcry_assert): Use LIKELY for assert check. (fast_wipememory2_unaligned_head): Use UNLIKELY for unaligned branching. * cipher/bufhelp.h (buf_cpy, buf_xor, buf_xor_1, buf_xor_2dst) (buf_xor_n_copy_2): Ditto.
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>