Some minor updates to the BUILD files.

--
MOS_MIGRATED_REVID=103087492

src/main/cpp/BUILD

diff --git a/src/main/cpp/BUILD b/src/main/cpp/BUILD
index 5234c7c..dfa4a60 100644
--- a/src/main/cpp/BUILD
+++ b/src/main/cpp/BUILD
@@ -1,5 +1,8 @@
 # Description:
 #   The Bazel launcher.
+package(
+    default_visibility = ["//visibility:public"],
+)
 
 cc_library(
     name = "blaze_util",

src/test/cpp/BUILD

diff --git a/src/test/cpp/BUILD b/src/test/cpp/BUILD
index 594dcfb..892d73b 100644
--- a/src/test/cpp/BUILD
+++ b/src/test/cpp/BUILD
@@ -1,5 +1,6 @@
 # Description:
 #   C++ utility tests for Bazel
+package(default_visibility = ["//visibility:public"])
 
 cc_test(
     name = "blaze_util_test",
@@ -11,6 +12,4 @@
     ],
 )
 
-test_suite(
-    name = "all_tests",
-)
+test_suite(name = "all_tests")

src/test/cpp/util/BUILD

diff --git a/src/test/cpp/util/BUILD b/src/test/cpp/util/BUILD
index 1c62d7d..e59029c 100644
--- a/src/test/cpp/util/BUILD
+++ b/src/test/cpp/util/BUILD
@@ -1,5 +1,6 @@
 # Description:
 #   C++ utility tests for Bazel
+package(default_visibility = ["//visibility:public"])
 
 cc_test(
     name = "md5_test",
@@ -29,6 +30,4 @@
     ],
 )
 
-test_suite(
-    name = "all_tests",
-)
+test_suite(name = "all_tests")