[openssl-gost] [gost-engine/engine] 409a1c: GOST EC armv7 aarch64 fixes

[Billy Brumley <noreply@github.com>]

  Branch: refs/heads/master
  Home:   https://github.com/gost-engine/engine
  Commit: 409a1c2b76ac1d783bef6d35542e338d3777b5ac
      https://github.com/gost-engine/engine/commit/409a1c2b76ac1d783bef6d35542e338d3777b5ac
  Author: Billy Brumley <bbrumley@gmail.com>
  Date:   2020-07-10 (Fri, 10 Jul 2020)

  Changed paths:
    M ecp_id_GostR3410_2001_CryptoPro_A_ParamSet.c
    M ecp_id_GostR3410_2001_CryptoPro_B_ParamSet.c
    M ecp_id_GostR3410_2001_CryptoPro_C_ParamSet.c
    M ecp_id_GostR3410_2001_TestParamSet.c
    M ecp_id_tc26_gost_3410_2012_256_paramSetA.c
    M ecp_id_tc26_gost_3410_2012_512_paramSetA.c
    M ecp_id_tc26_gost_3410_2012_512_paramSetB.c
    M ecp_id_tc26_gost_3410_2012_512_paramSetC.c

  Log Message:
  -----------
  GOST EC armv7 aarch64 fixes

char defaults to signed on x86/x64, but unsigned on ARM.