Features
   * Support building on e2k (Elbrus) architecture: correctly enable
     -Wformat-signedness, and pass -Wno-signed-one-bit-field and
     -Wno-sign-compare to get rid of excess warnings. Contributed by
     makise-homura (Igor Molchanov) <akemi_homura@kurisa.ch>.

Features
   * Support building on e2k (Elbrus) architecture: correctly enable
     -Wformat-signedness, and fix the code that causes signed-one-bit-field
     and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
     <akemi_homura@kurisa.ch>.

Fix e2k support changelog snippet
Fix e2k support changelog snippet

Signed-off-by: makise-homura <696b3a2c906cfb7f981b1719612c7d6b995e283a@kurisa.ch>
