Fix transitive macro load

See: bazelbuild/bazel#5636

bazel/rules.bzl

@@ -14,10 +14,30 @@
 # limitations under the License.
 #
 
-load("//bazel/rules:library_rule.bzl", "stratum_cc_library")
-load("//bazel/rules:binary_rule.bzl", "stratum_cc_binary")
-load("//bazel/rules:test_rule.bzl", "stratum_cc_test")
-load("//bazel/rules:platform_rules.bzl",
-     "stratum_platform_select", "stratum_platform_filter", "stratum_platform_alias")
-load("//bazel/rules:package_rule.bzl", "stratum_package")
-load(":defs.bzl", "EMBEDDED_ARCHES", "HOST_ARCHES", "STRATUM_INTERNAL")
+load("//bazel/rules:library_rule.bzl", _stratum_cc_library = "stratum_cc_library")
+load("//bazel/rules:binary_rule.bzl", _stratum_cc_binary = "stratum_cc_binary")
+load("//bazel/rules:test_rule.bzl", _stratum_cc_test = "stratum_cc_test")
+load(
+     "//bazel/rules:platform_rules.bzl",
+     _stratum_platform_select = "stratum_platform_select",
+     _stratum_platform_filter = "stratum_platform_filter",
+     _stratum_platform_alias = "stratum_platform_alias",
+)
+load("//bazel/rules:package_rule.bzl", _stratum_package = "stratum_package")
+load(
+     ":defs.bzl",
+     _EMBEDDED_ARCHES = "EMBEDDED_ARCHES",
+     _HOST_ARCHES = "HOST_ARCHES",
+     _STRATUM_INTERNAL = "STRATUM_INTERNAL",
+)
+
+stratum_cc_library = _stratum_cc_library
+stratum_cc_binary = _stratum_cc_binary
+stratum_cc_test = _stratum_cc_test
+stratum_platform_select = _stratum_platform_select
+stratum_platform_filter = _stratum_platform_filter
+stratum_platform_alias = _stratum_platform_alias
+stratum_package = _stratum_package
+EMBEDDED_ARCHES = _EMBEDDED_ARCHES
+HOST_ARCHES = _HOST_ARCHES
+STRATUM_INTERNAL = _STRATUM_INTERNAL