Partials can be paths

Allows partials with slashes, a common partial syntax. For example:

    {{> shared/dude}}

lib/handlebars/compiler/printer.js

@@ -72,7 +72,7 @@ Handlebars.PrintVisitor.prototype.mustache = function(mustache) {
 };
 
 Handlebars.PrintVisitor.prototype.partial = function(partial) {
-  var content = this.accept(partial.id);
+  var content = this.accept(partial.partialName);
   if(partial.context) { content = content + " " + this.accept(partial.context); }
   return this.pad("{{> " + content + " }}");
 };
@@ -111,6 +111,10 @@ Handlebars.PrintVisitor.prototype.ID = function(id) {
   }
 };
 
+Handlebars.PrintVisitor.prototype.PARTIAL_NAME = function(partialName) {
+    return "PARTIAL:" + partialName.name;
+};
+
 Handlebars.PrintVisitor.prototype.DATA = function(data) {
   return "@" + data.id;
 };