Make transitive starlark loads explicit

This fixes the build with bazel 0.25.

Bug: Issue 10855
Change-Id: Ifaf1771bfe0d9fa07ab60d09a871e696c571468b
diff --git a/WORKSPACE b/WORKSPACE
index a525358..7b6285e 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "2b1d68959119920e5fa9bdfb9f0cf926bfef4929",
+    commit = "70d6ae0cee03c456fa4b32c807f3d13c032ef498",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/lib/prolog/prolog.bzl b/lib/prolog/prolog.bzl
index ae46601..5ba004b 100644
--- a/lib/prolog/prolog.bzl
+++ b/lib/prolog/prolog.bzl
@@ -1 +1,3 @@
-load("@com_googlesource_gerrit_bazlets//lib/prolog:prolog.bzl", "prolog_cafe_library")
+load("@com_googlesource_gerrit_bazlets//lib/prolog:prolog.bzl", _prolog_cafe_library = "prolog_cafe_library")
+
+prolog_cafe_library = _prolog_cafe_library
diff --git a/tools/bzl/classpath.bzl b/tools/bzl/classpath.bzl
index d5764f7..c921d01 100644
--- a/tools/bzl/classpath.bzl
+++ b/tools/bzl/classpath.bzl
@@ -1,4 +1,6 @@
 load(
     "@com_googlesource_gerrit_bazlets//tools:classpath.bzl",
-    "classpath_collector",
+    _classpath_collector = "classpath_collector",
 )
+
+classpath_collector = _classpath_collector
diff --git a/tools/bzl/junit.bzl b/tools/bzl/junit.bzl
index 3af7e58..97307bd 100644
--- a/tools/bzl/junit.bzl
+++ b/tools/bzl/junit.bzl
@@ -1,4 +1,6 @@
 load(
     "@com_googlesource_gerrit_bazlets//tools:junit.bzl",
-    "junit_tests",
+    _junit_tests = "junit_tests",
 )
+
+junit_tests = _junit_tests
diff --git a/tools/bzl/maven_jar.bzl b/tools/bzl/maven_jar.bzl
index 43393b9..ce4730f 100644
--- a/tools/bzl/maven_jar.bzl
+++ b/tools/bzl/maven_jar.bzl
@@ -1 +1,4 @@
-load("@com_googlesource_gerrit_bazlets//tools:maven_jar.bzl", "GERRIT", "maven_jar")
+load("@com_googlesource_gerrit_bazlets//tools:maven_jar.bzl", _GERRIT = "GERRIT", _maven_jar = "maven_jar")
+
+GERRIT = _GERRIT
+maven_jar = _maven_jar
diff --git a/tools/bzl/plugin.bzl b/tools/bzl/plugin.bzl
index d21bdf4..a271493 100644
--- a/tools/bzl/plugin.bzl
+++ b/tools/bzl/plugin.bzl
@@ -1,7 +1,12 @@
 load(
     "@com_googlesource_gerrit_bazlets//:gerrit_plugin.bzl",
-    "PLUGIN_DEPS",
-    "PLUGIN_DEPS_NEVERLINK",
-    "PLUGIN_TEST_DEPS",
-    "gerrit_plugin",
+    _gerrit_plugin = "gerrit_plugin",
+    _plugin_deps = "PLUGIN_DEPS",
+    _plugin_deps_neverlink = "PLUGIN_DEPS_NEVERLINK",
+    _plugin_test_deps = "PLUGIN_TEST_DEPS",
 )
+
+gerrit_plugin = _gerrit_plugin
+PLUGIN_DEPS = _plugin_deps
+PLUGIN_DEPS_NEVERLINK = _plugin_deps_neverlink
+PLUGIN_TEST_DEPS = _plugin_test_deps
diff --git a/tools/genrule2.bzl b/tools/genrule2.bzl
index de66f32..61c4e18 100644
--- a/tools/genrule2.bzl
+++ b/tools/genrule2.bzl
@@ -1 +1,3 @@
-load("@com_googlesource_gerrit_bazlets//tools:genrule2.bzl", "genrule2")
+load("@com_googlesource_gerrit_bazlets//tools:genrule2.bzl", _genrule2 = "genrule2")
+
+genrule2 = _genrule2