Roll forward change https://cr.bazel.build/9250 with Java 7 build failure fix.

Make Java tool jars available from @bazel_tools.

Now users can point to default Java tool jars in customized
java_toolchain rule defined in project's BUILD file.

PiperOrigin-RevId: 152012191

src/BUILD

diff --git a/src/BUILD b/src/BUILD
index 8cba362..c658107 100644
--- a/src/BUILD
+++ b/src/BUILD
@@ -146,6 +146,7 @@
         "//src/tools/android/java/com/google/devtools/build/android/ziputils:embedded_tools",
         "//src/main/protobuf:srcs",
         "//src/java_tools/buildjar:JavaBuilderDeploy",
+        "//src/java_tools/buildjar:VanillaJavaBuilder_deploy.jar",
         "//src/java_tools/singlejar:SingleJar_deploy.jar",
         "//src/java_tools/buildjar/java/com/google/devtools/build/buildjar/genclass:GenClass_deploy.jar",
         "//src/java_tools/junitrunner/java/com/google/testing/junit/runner:Runner_deploy.jar",