Pull up following revision(s) (requested by manu in ticket #985):

crypto/external/bsd/openssl/lib/libcrypto/arch/i386/modes.inc: revision 1.2
crypto/external/bsd/openssl/lib/libcrypto/arch/i386/modes.inc: revision 1.3

Add missing defines:
https://github.com/openssl/openssl/pull/6828

When ghash-x86.S is generated with -DOPENSSL_IA32_SSE2 we need to
compile
gcm128.c with the same flags.

Reported by manu@

remove -DGHASH_ASM_X86; it is already defined.

(martin)