Implement Bazel build

To run the tests:

  bazel test //...

To build the Gerrit plugin API, run:

  bazel build gerrit-plugin-api:plugin-api_deploy.jar

To build the Gerrit extension API, run:

  bazel build gerrit-extension-api:extension-api_deploy.jar

TODOs:

Licenses
Reduce visibility (all public for now)
Generate HTML Documentation
Core plugins
gerrit_plugin() rule to build plugins in tree and standalone modes
GWT UI (only gwt_module() skylark rule is provided, no gwt_binary())
PolyGerrit UI
WAR
Publish artifacts to Maven Central
Ask Bazel team to add Gerrit to their CI on ci.bazel.io

Contributed-By: Han-Wen Nienhuys <hanwen@google.com>
Change-Id: I9a86e670882a44a5c966579cdeb8ed79b1590de3

lib/joda/BUILD

diff --git a/lib/joda/BUILD b/lib/joda/BUILD
new file mode 100644
index 0000000..a673bf5
--- /dev/null
+++ b/lib/joda/BUILD
@@ -0,0 +1,11 @@
+java_library(
+  name = 'joda-time',
+  exports = ['@joda_time//jar'],
+  runtime_deps = ['joda-convert'],
+  visibility = ['//visibility:public'],
+)
+
+java_library(
+  name = 'joda-convert',
+  exports = ['@joda_convert//jar'],
+)