Update Soy to latest version

Released at upstream (https://github.com/google/closure-templates) but
not yet to Maven Central, so deployed a release to the Gerrit
repository.

Add new dependency on ICU4J and move to its own subpackage.

Change-Id: I7fd2df81c65334924485cebca7f1d3cdc97f64ec

lib/BUCK

diff --git a/lib/BUCK b/lib/BUCK
index abed916..a5f03b0 100644
--- a/lib/BUCK
+++ b/lib/BUCK
@@ -7,12 +7,6 @@
 )
 
 maven_jar(
-  name = 'soy',
-  id = 'com.google.template:soy:2012-12-21',
-  sha1 = 'cc28da103845a0f08cfd3fa5abdd45899b0adae1',
-)
-
-maven_jar(
   name = 'servlet-api_2_5',
   id = 'org.eclipse.jetty.orbit:javax.servlet:2.5.0.v201103041518',
   sha1 = '9c16011c06bc6fe5e9dba080fcb40ddb4b75dc85',

lib/soy/BUCK

diff --git a/lib/soy/BUCK b/lib/soy/BUCK
new file mode 100644
index 0000000..f97bdc0
--- /dev/null
+++ b/lib/soy/BUCK
@@ -0,0 +1,17 @@
+include_defs('//bucklets/maven_jar.bucklet')
+
+maven_jar(
+  name = 'soy',
+  id = 'com.google.template:soy:2014-04-22',
+  sha1 = 'd0b78ae3ab2283cdeae1a3b2f1fc5b7155a7305d',
+  deps = [
+    ':icu4j',
+  ],
+  repository = GERRIT,
+)
+
+maven_jar(
+  name = 'icu4j',
+  id = 'com.ibm.icu:icu4j:51.1',
+  sha1 = '8ce396c4aed83c0c3de9158dc72c834fd283d5a4',
+)