Simplify and update openssl.spec
bn/asm/x86_64-mont5.pl: comply with Win64 ABI.

PR: 3189
Submitted by: Oscar Ciurana
(cherry picked from commit c5d5f5bd0fe8b2313bec844c0f80f3d49562bfa8)
Avoid multiple locks in FIPS mode.

PR: 3176.

In FIPS mode ssleay_rand_bytes is only used for PRNG seeding and is
performed in either a single threaded context (when the PRNG is first
initialised) or under a lock (reseeding). To avoid multiple locks disable
use of CRYPTO_LOCK_RAND in FIPS mode in ssleay_rand_bytes.
(cherry picked from commit 53142f72c9b9c9bad2f39ca6200a4f04f5c8001c)
make update