lib/x86: adding missing MSVC and Apple clang version checks

Most of the recently added code that uses newer x86 intrinsics (AVX-512,
VPCLMULQDQ, AVX-VNNI) is being compiled unconditionally when the
compiler is MSVC or Apple clang.  This is inconsistent with the minimum
versions of these compilers that we claim to support.  Therefore, add
the needed checks against _MSC_VER and __apple_build_version__.

lib/x86/adler32_impl.h

@@ -268,7 +268,7 @@ adler32_avx2_chunk(const __m256i *p, const __m256i *const end, u32 *s1, u32 *s2)
  * implementation, but instead of using AVX-512 it uses AVX2 plus AVX-VNNI.
  * AVX-VNNI adds dot product instructions to CPUs without AVX-512.
  */
-#if GCC_PREREQ(11, 1) || CLANG_PREREQ(12, 0, 0) || defined(_MSC_VER)
+#if GCC_PREREQ(11, 1) || CLANG_PREREQ(12, 0, 13000000) || MSVC_PREREQ(1930)
 #  define adler32_avx2_vnni	adler32_avx2_vnni
 #  define FUNCNAME		adler32_avx2_vnni
 #  define FUNCNAME_CHUNK	adler32_avx2_vnni_chunk
@@ -340,7 +340,7 @@ adler32_avx2_vnni_chunk(const __m256i *p, const __m256i *const end,
  * AVX512BW/AVX512VNNI implementation.  Uses the vpdpbusd (dot product)
  * instruction from AVX512VNNI.
  */
-#if GCC_PREREQ(8, 1) || CLANG_PREREQ(6, 0, 0) || defined(_MSC_VER)
+#if GCC_PREREQ(8, 1) || CLANG_PREREQ(6, 0, 10000000) || MSVC_PREREQ(1920)
 #  define adler32_avx512_vnni	adler32_avx512_vnni
 #  define FUNCNAME		adler32_avx512_vnni
 #  define FUNCNAME_CHUNK	adler32_avx512_vnni_chunk

lib/x86/crc32_impl.h

@@ -67,7 +67,7 @@
  * incorrectly assumes that VPCLMULQDQ implies AVX-512:
  * https://developercommunity.visualstudio.com/t/Compiler-incorrectly-assumes-VAES-and-VP/10578785?space=62&q=AVX512&sort=newest
  */
-#if GCC_PREREQ(8, 1) || CLANG_PREREQ(6, 0, 0)
+#if GCC_PREREQ(8, 1) || CLANG_PREREQ(6, 0, 10000000)
 #  define crc32_x86_vpclmulqdq_avx2	crc32_x86_vpclmulqdq_avx2
 #  define SUFFIX				 _vpclmulqdq_avx2
 #  define ATTRIBUTES		_target_attribute("vpclmulqdq,pclmul,avx2")
@@ -77,7 +77,7 @@
 #  include "crc32_pclmul_template.h"
 #endif
 
-#if GCC_PREREQ(8, 1) || CLANG_PREREQ(6, 0, 0) || defined(_MSC_VER)
+#if GCC_PREREQ(8, 1) || CLANG_PREREQ(6, 0, 10000000) || MSVC_PREREQ(1920)
 /*
  * VPCLMULQDQ/AVX512 implementation with 256-bit vectors.  This takes advantage
  * of some AVX-512 instructions but uses 256-bit vectors rather than 512-bit.