Add ubuntu and macOS arm64 tests

In response to #374
(For my future reference: The list of bazel ci supported platforms is in PLATFORMS, here: https://github.com/bazelbuild/continuous-integration/blob/master/buildkite/bazelci.py)

.bazelci/presubmit.yml

@@ -12,12 +12,24 @@ tasks:
     - "//..."
     test_targets:
     - "//..."
+  ubuntu2004_arm64:
+    working_directory: test
+    build_targets:
+    - "//..."
+    test_targets:
+    - "//..."
   macos:
     working_directory: test
     build_targets:
     - "//..."
     test_targets:
     - "//..."
+  macos_arm64:
+    working_directory: test
+    build_targets:
+    - "//..."
+    test_targets:
+    - "//..."
   windows:
     working_directory: test
     environment:

config.lzma-linux.h

@@ -56,7 +56,11 @@
 /* #undef HAVE_COMMONCRYPTO_COMMONDIGEST_H */
 
 /* Define to 1 if you have the <cpuid.h> header file. */
-#define HAVE_CPUID_H 1
+#if defined __has_include
+  #if __has_include (<cpuid.h>)
+    #define HAVE_CPUID_H 1
+  #endif
+#endif
 
 /* Define if the GNU dcgettext() function is already present or preinstalled.
    */