Merge branch 'stable-0.2'

* stable-0.2:
  Bump version to 0.2-11
  BlameCacheImpl: Avoid NPE if path does not exist
  VisibilityCacheTest: Open TestRepository in try-with-resource
  Backport all build-related commits from master to stable-0.2

Change-Id: I0c28c63abe2643c51232b27a299cf02777951610

java/com/google/gitiles/blame/cache/BlameCacheImpl.java

diff --git a/java/com/google/gitiles/blame/cache/BlameCacheImpl.java b/java/com/google/gitiles/blame/cache/BlameCacheImpl.java
index 320bf49..75ab09b 100644
--- a/java/com/google/gitiles/blame/cache/BlameCacheImpl.java
+++ b/java/com/google/gitiles/blame/cache/BlameCacheImpl.java
@@ -136,6 +136,9 @@
   public static List<Region> loadBlame(Key key, Repository repo) throws IOException {
     try (BlameGenerator gen = new BlameGenerator(repo, key.path)) {
       gen.push(null, key.commitId);
+      if (gen.getResultContents() == null) {
+        return ImmutableList.of();
+      }
       return loadRegions(gen);
     }
   }