Gitiles: Implement Buck driven build

Until extension system is released by Buck team [1], factor out
existing Buck building blocks as Bucklets in standalone git
repository and reuse it as Git submodule to implement Buck driven
build [2].

To build gitiles `gitiles` target is used:

  buck build gitiles

To build servlet, sources and javadoc in addition, `all` target is used:

  buck build all

that produces:

  buck-out/gen/gitiles.war
  buck-out/gen/servlet.jar
  buck-out/gen/src.jar
  buck-out/gen/javadoc.jar

To execute the tests:

  buck test --all

To generate eclipse project:

  bucklets/tools/eclipse.py

To fetch sources for all dependent libraries too:

  bucklets/tools/eclipse.py --src

To install gitiles-servlet into local Maven repository:

  buck build mvn_install

To deploy gitiles-servlet into remote Maven repository:

  buck build mvn_deploy

[1] http://stackoverflow.com/questions/16681527/buck-vs-gradle-pros-and-cons-for-android-build-systems
[2] https://gerrit.googlesource.com/bucklets

Change-Id: Ib824dac6423d69c298f9c30ed7a0c05b4d6447c0

lib/jetty/BUCK

diff --git a/lib/jetty/BUCK b/lib/jetty/BUCK
new file mode 100644
index 0000000..525f94c
--- /dev/null
+++ b/lib/jetty/BUCK
@@ -0,0 +1,67 @@
+include_defs('//bucklets/maven_jar.bucklet')
+
+VERS = '8.1.7.v20120910'
+EXCLUDE = ['about.html']
+
+maven_jar(
+  name = 'servlet',
+  id = 'org.eclipse.jetty:jetty-servlet:' + VERS,
+  sha1 = '93da01e3ea26e70449e9a1a0affa5c31436be5a0',
+  deps = [
+    ':security',
+    '//lib:servlet-api_3_0',  # Different from the rest of gitlies-server.
+  ],
+  exclude = EXCLUDE,
+)
+
+maven_jar(
+  name = 'security',
+  id = 'org.eclipse.jetty:jetty-security:' + VERS,
+  sha1 = '8d78beb7a07f4cccee05a3f16a264f1025946258',
+  deps = [':server'],
+  exclude = EXCLUDE,
+  visibility = [],
+)
+
+maven_jar(
+  name = 'server',
+  id = 'org.eclipse.jetty:jetty-server:' + VERS,
+  sha1 = '6c81f733f28713919e99c2f8952e6ca5178033cd',
+  exported_deps = [
+    ':continuation',
+    ':http',
+  ],
+  exclude = EXCLUDE,
+)
+
+maven_jar(
+  name = 'continuation',
+  id = 'org.eclipse.jetty:jetty-continuation:' + VERS,
+  sha1 = 'f60cfe6267038000b459508529c88737601081e4',
+  exclude = EXCLUDE,
+)
+
+maven_jar(
+  name = 'http',
+  id = 'org.eclipse.jetty:jetty-http:' + VERS,
+  sha1 = '10126433876cd74534695f7f99c4362596555493',
+  exported_deps = [':io'],
+  exclude = EXCLUDE,
+)
+
+maven_jar(
+  name = 'io',
+  id = 'org.eclipse.jetty:jetty-io:' + VERS,
+  sha1 = 'a81f746ae1b10c37e1bb0a01d1374c202c0bd549',
+  exported_deps = [':util'],
+  exclude = EXCLUDE,
+  visibility = [],
+)
+
+maven_jar(
+  name = 'util',
+  id = 'org.eclipse.jetty:jetty-util:' + VERS,
+  sha1 = '7eb2004ab2c22fd3b00095bd9ba0f32a9e88f6a5',
+  exclude = EXCLUDE,
+  visibility = [],
+)